Oh yeah that's totally fair. I was hosting a meeting the other day and one of my participants wanted to share their screen, and I still haven't found where to do that. I just made them host. Their UI is hot garbage.
It's in your meeting settings (sadly on their website, not in the app) under "Who Can Share?".
Zoom does seem to do better overly severely degraded connections (and surfaces that It is happening). The experience is still pretty bad though.