Am I Correct Understanding Brave and Chrome will not run in Catalina?
I think you misunderstood something. As described here, you just need
MacOS Catalina 10.15 or later for a successful installation.
When I start Brave, a blank window opens then closes.
When I start Brave from command line:
blank window opens then closes.
Modified start from command line:
A usable window opens, containing a warning
I removed then reinstalled Brave, no change in what happens
This is very odd. Can you try to add this option
--enable-logging=stderr --v=1 > debug.txt 2>&1 to your command and post the content or upload the file here?
I need to say I’m a Linux user so my knowledge in the macOS world is limited, but I try my best.