You can take Slack off me when you pry it out of my cold dead hands.
On the other hand, I find Teams video conferencing to be pretty good for video meetings. Once you get to a certain number of people, Zoom starts to do better interface-wise, but for a useful number of participants Teams has been relatively friction-free for me.
Also, if you have a slightly older workstation, your tab on which teams run will definitely crash. Mostly.