It's pretty clear by now that Adobe isn't enlisting feedback from professionals who use Bridge when they make "improvements." For those who edit thousands of images a day, Lightroom is clunky. Thus, I use Bridge. I'd love to test out Bridge for future releases so the mistakes of Bridge 2019 aren't repeated. How do I get on the list to help Adobe?
We're glad that you're interested in becoming a part of Adobe Bridge beta testing. Plea have a look at this thread to know more about our Beta Testing details: How do I become a Beta Tester for Adobe Software? | Photoshop Family Customer Community
Your link above just leads to the Adobe Support Community home page. I am unable to locate the thread you refer to.