I think "suck" is over the top but I think they've been declining in quality since Colors. The Parallax 1 is honestly really really weak in comparison to any other BTBAM material. The songs all have great introductions but end up just going nowhere in the end, and the first two songs especially just seem like a random mess of riffs on top of riffs. I mean that's cool or whatever, I can listen to BTBAM riffs for days but nothing on Parallax really moves me emotionally except maybe the solo in Lunar Wilderness. More critically, the song structures themselves are just really kinda lazy, so disappointing and that sucks because that's what I like most about the band.
my problem with modern BTBAM mostly boils down to this though: Self-Titled, Silent Circus, Alaska and Colors are all completely different sounding albums. There was still a natural progression from album to album and they all have their signature moments but their overall sound was so diverse and the albums all offered extremely different experiences.
then after Colors, they decided that that was specifically what they wanted to do and so everything after that just seems like a kinda uninspired retreading of the same ground. Great Misdirect and Parallax 1 are both works that are easily described as "they are like Colors". The music is increasingly complex and intricate...but idk, it's definitely losing its appeal. Technical prowess only hooks me so much.