I'm pointing this out not as an excuse for Zoom, but as an example of long-standing friction in macOS. I think it's worth pointing out they've had the same motivations in the past. Like Dropbox, I hope the OS improves so this isn't necessary and knowing this is a pattern (and not a one-off) with the company I will avoid them when possible.

There are already good solutions to this issue. In particular, simply placing the app package in a zip file, then checking to see if it's installed correctly when opened.

My annoyance with macOS/Apple is that this isn't standard and default. Therefore, not consistent and can be confusing (especially if you're trying to join a call in progress). Because of this, Zoom chose to reduce the number of dialogs thrown up.