If it doesn't work as expected, I will try the next. There is literally 0 loyalty involved in my company.
As an example, when switching to Teams to reply to a message why does it focus the search bar instead of the chat window? How often do users search (as their first focussed action) in comparison to using the chat window?
Teams seems to be full of these minor UX annoyances that all add up to make Teams a chore to use. Slack has done a much better job on UX (in my opinion).
Teams works for us. Chat works, charming or not. And say suddenly you need to share your desktop while chatting to show some issue, well no problem. Need to invite a couple of folks from support to get some of their input? No problem, just invite them. Poof you got an ad-hoc meeting going and you get an issue solved in 5-10 minutes and customer is happy.
It's not like I want to marry it, but for the most part it works quite well and doesn't get in my way. And so it's a decent enough tool.