I understand what you're getting at, but in this particular case, Zoom is capable of joining a call in-browser (like Google Hangouts) which doesn't require the

I understand what you're getting at, but in this particular case, Zoom is capable of joining a call in-browser (like Google Hangouts) which doesn't require the server that was affected by the silent update. So you'd still be able to join that call, just not using the native app. Perhaps that was part of their risk analysis when they decided to ship the update.