It is really obnoxious when you first install it, but once you have set up your rules for your most frequently used applications, it isn't really an issue for me. You can also export and import your rules if you want to move them to a new system.
> once you have set up your rules for your most frequently used applications, it isn't really an issue
I can second this, also if you're overwhelmed you probably have a lot of garbage applications making too many outbound network requests to trackers and who knows what else which is actually nice to know about. Chrome-based browsers and Electron based apps seem to be particularly awful about this. My HP printer app tries to connect to Google Analytics, Microsoft RDP phones-home before connecting to a session. I really value that kind of insight and enjoy being able to control it.
I haven't used micro snitch, though.