I think she's wrong about older versions of LR still running on Catalina, where my understanding is that 32-bit apps simply won't run on Catalina. Even the latest version of LR Classic still has a 32-bit video component that'll need to be updated before Catalina's rollout.
Wow, looks like LR all the way back to at least LR4 is 64-bit!My understanding is that Lr 6 is 64-bit. But the installer and related utilities are not. So would not be able to install or reinstall Lr 6 on Catalina. Adobe is likely not intending to do anything to help folks continue using Lr on Catalina or 64 bit only Windows. Why should they?