I feel you! Did you also have your kid shouting in the background? If they found a way to specifically mute kids crying or shouting it would be a huge deal :P
We've been holding 25+ participant Teams sessions, and the only rules are that only one person can speak at a time and no one unmutes unless they're speaking. The noise cancellation might as well not even exist.
Comparatively, I was impressed that we could even have a Meet without everyone needomg to be on mute.