For your purposes, I think it's 100% okay to decline a job for (almost) anything. Think about it- they can turn you down for (almost) anything, legally protected reasons notwithstanding, right?
I agree with some other respondents that it's probably best not to go into detail if they ask- a simple "I don't think I'm a good fit for your environment at this time" should suffice. I wouldn't mention Teams, specifically, unless they really press for details (they almost never do).
Side note: ditto, Teams irritates the p** out of me on all platforms as well, as do the Android versions of most of the O365 suite.
I agree with some other respondents that it's probably best not to go into detail if they ask- a simple "I don't think I'm a good fit for your environment at this time" should suffice. I wouldn't mention Teams, specifically, unless they really press for details (they almost never do).
Side note: ditto, Teams irritates the p** out of me on all platforms as well, as do the Android versions of most of the O365 suite.