Very fair comment. I guess that most developers don't see it as a huge issue though (I've not seen any issues with Apps that I use on Catalina). Direction of travel is towards more onerous Apple involvement.
To the contrary, most apps I have to install from outside the App Store now aren’t signed and need the workaround (right click, Open, OK the scary dialog, open again) to run.
You make this sound like a new problem. You have had to do that for unsigned apps for years and at least in my experience the majority of apps that come from outside the App Store are unsigned. This has been a thing for so long that I almost instinctively right click, Open the first time I run an app I downloaded from the internet
