Your name betrays you.“Notably, macOS Catalina does away with 32-bit app support, so some of your older apps are going to stop working. The operating system will let you know which apps are now defunct once you upgrade.”
Why can’t they tell you BEFORE you do the upgrade...? Time Machine does the same thing with backups it deletes. It tells you AFTER it deletes them...
Everyone who likes tech has known for years.
macOS has told you on previous versions about their deprecation.