I don't trust some of the numbers in this article.
Microsoft Teams: 100% CPU usage on 32GB machines
I'm literally sitting here right now on a Teams call (I've already contributed what I needed to), looking at my CPU usage, which is staying in the 4.6% to 7.3% CPU range.
Is that still too high? Probably. Have I seen it hit 100% CPU usage? Yes, rarely (but that's usually a sign of a deeper issue).
Maybe the author is going with worst case scenario. But in that case he should probably qualify the examples more.