EDIT: Thank you all for detailing your experience with, and hatred for, this miserable product. Your display of solidarity is inspiring. Now, say it with me:
What's bad about it? I'm a Linux admin by nature but an admin of all by profession and overall I have no real complaints about Teams. Has always worked just fine for me and to my knowledge everyone else.
It's missing basic features. The stuff that any normal human would assume it can do it just can't do. It's absolutely terrible if you use it in a large organization where you have to speak to multiple different people.
For one-on-one conversations I guess it's okay but the moment you try and get anything more complicated than that going on it becomes a nightmare.
I haven’t used competing apps to know, but as a forced teams user it is very sluggish, seems to break other ms apps half the time and has some strange and persistent design choices that irk me. It also crashes on its own, when I’m not using it 2-3 times a day.
It has improved in terms of features lately, but still feels very bloated and WIP most of the time. It still won’t let me control where video windows are, and I’ll never understand this.
This is our replacement for Skype, which was obviously feature deficient and getting old, but does what it’s supposed to do and doesn’t cause problems.
Not sure if there’s a good competing app in terms of video and slack functionality, integration into outlook and onedrive (both of which also annoy me and seem to be performing worse-over-time, but are unavoidable and sometimes useful.)