The crux of that statement is “everything possible”. Xojo is simply not set up to be able to go back in time and compile and release older versions of Xojo after a new major release has occurred. While it may be just a matter of going back to an d revision, other things have changed since then which often prevent it anyway. Things like the OS that your builders run on, the version of Xcode or visual studio that build the frameworks, the processor on a build system (they switched from Intel to M1s near the end of my time there). Replicating the conditions exactly enough to be able to build something comparable may just not be practical.