Okay, I've been hearing a lot of complaints about the online function for this game, Is it really that bad? I just got the game a few days ago, and was planning to buy Nintendo Switch Online just for it. Can someone tell me what makes the online in Ultimate terrible? I might wait until its fixed to buy the NSO.
It isn't completely terrible, but it's pretty bad.
You pick your ruleset and queue in for a match, but you're not guaranteed to get into a match with someone that has the same ruleset. On top of this you have to back out of the queue completely if you want to switch characters. Some people have reported input delay as well, but it seems to be worse for some over others.
If you still have the 7 day free trial, use that and test out online for yourself. The first two points I mentioned are really my only problems with the online, but other than that I've still been having fun with it. There's also a new patch coming next week that might fix some of people's grievances, you could wait for that to see.