I think its unfair to say the real customers of IT are regulators and auditors. But meeting their requirements is legally mandated. You have to meet that standard. In an imperfect world with deadlines, overhead, and limited resources that's sometimes all you can hope for.

As for Teams being awful. It has problems. But all non native desktop apps do and that includes Slack and Discord. I use both Teams and Discord daily and they are about equal in frustration.