Teams target is Corporations so it should be professional?
Microsoft has tries to make Teams "less professional" or more causal and people hate the changes. They recently changed the theme of the emoticons "Microsoft Fluent Emojis were brought to life to embrace expressiveness and play" they seem to be well received by non-professional users, or even professionals in "creative" fields, but for traditional corporate users they look terrible and are not well received at all, the feedback asking for the return of the traditional emojis has 10's of thousands of votes.
for work I want a professional platform, I want teams to be a professional tool for professionals