Absolutely wild that the entire world got locked inside their homes and everybody became a remote worker and that wasn't enough for Skype or Teams to get used. Embarrassing! and this is the end result.
I used Teams through most of lockdown. The developers were all on macs, and used slack for chat, so the only feature of teams we used was for the daily stand-up video call.
The desktop app ran very poorly on macs, and left everyone pretty much blaming it whenever their Mac acted up.
I only used the website version myself, and it was fine, so I'm assuming there was just some hanky programming in an election wrapper that needed optimizing.
They forgot Skype existed and everyone used Zoom. Then Microsoft scrambled and used their monopoly power in Windows to force Teams on everyone. Teams was not a thing until at least half a year into the pandemic.