Saying TFA is objectively bad would mean its plot structure doesn't make sense, the characters are unlikeable or artificial, use of tropes that indicate bad writing, etc etc.
TFA has none of that: its plot is consistent, its characters feel real and it doesn't have things like a Deus ex Machina.
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TFA IS objectively bad though.
plot structure doesn't make sense
It absolutely doesn't.
The First Order is never properly explained, nor does it fit in with the events of at the end of Episode VI. Their superweapon is illogical by any stretch of the imagination. People wanting to find Luke Skywalker is never explained. We're never told WHY people wanna find Luke.
More than that, Luke leaving a map to be found also doesn't make sense, as why would he wanna be found if he went into hiding? More importantly, how could he be sure that his friends would be the ones to find him, especially considering how close he came do being found by the first order instead.
How Maz got Anakin's lightsaber also doesn't make sense, as that saber fell down into the core of a gas planet in EpV, which would render it either destroyed, or totally unrecoverable. More than that, it's never even explained.
How the first order manages to have more resources than the Republic also makes no sense, as they're the ones rebelling this time around, and in Episode VI, the whole galaxy was rejoicing at the death of the Empire. Even if there were remenants, by EpVI, the Rebels were equal in power to the Empire as they had half the galaxy backing them.
We never got an explanation on how Poe survived the crash on Jakku, he just... did. (It's cause he was meant to die in the initial script, and that was changed latter on, but the writers never bothered to explain how he survived, that's bad writing).
As well as all the convenient things that happen over the course of the film simply to drive the plot forward. Most notably, the rift that separates Rey and Ren at the very end, to end their fight.
I could go on...
the characters are unlikeable or artificial
But they are exactly that. I've just been arguing that Rey is a poorly written character all thread, go and read those to hear that arguement. But this goes beyond Rey. Poe's motivations for example don't make ANY sense, his entire mission was to recover BB-8, and in fact, he flew DOWN to Jakku to get him back, yet after her crashes, we never see him again untill they go to the jungle planet. Whatever happened to his mission? Did he simply trust some dude he JUST met was gonna fulfill that for him? ESPECIALLY when said person had vocally expressed his desire to get out of there, and continues to do so even after coming across BB8 again out of sheer coincidence? Poe's motivations are TOTALLY out of whack.
Finn too. He literally rescues the guy who kills his best friend at the start of the film, and then befriends him. That doesn't make any sense, wouldn't watching your friends get killed by a rebel further your resolve to kill the guy who killed your friend?
Or more so, how about Ren? He ADORES Vader, and he wants to "finish what Vader started." You mean destroy the Sith? Because that's EXACTLY what Vader did. Vader the is person solely responsible for destroying the empire and killing off the remaining Sith. And this was common knowledge at the end of Episode VI, not only that, but Vader's entire character is about someone finding the light again. Why would you call his name to show you the path to darkness, and be rid of the light? As Vader was not only never able to do that, but in fact did the opposite, found the light. Not only that, but Anakin IS a force ghost, this was shown at the end of Ep VI, so if Ren called him out being force sensitive, Anakin would tell him otherwise. Hell, Anakin's ENTIRE reason for turning to the dark side was because he didn't agree with the Jedi Order and their hypocrisy. Because they shunned emotion. It was Luke's brand of Light side force that turned Vader back, as he saw that his son found the answer he never could. Ren would be TAUGHT by this new method, so there'd be no reason for Ren to be seduced at all. And why this is NEVER EXPLAINED.
use of tropes that indicate bad writing
The film is nothing BUT tropes. It's a direct copy of A New Hope, which itself is a by the book monomyth, which is as trope riddled as you can get. Except ANH at least had interesting characters and a good plot to move it forward. TFA has none of that and is riddled with unexplained plotholes, and character motivations that don't make sense. Hell, the characters themselves are LITERAL walking tropes. You have the generic hero who's good at everything, you have the goofy yet cowardly sidekick, and you have the hotblooded and snappy ace pilot. Even the villain is cliche as ****. You might was well play Linkin Park in every scene he's in.
Impa, and Fi are my two least favorites because of the final hit on their weak attacks take too long to start a new combo..
