Well, Apple has been warning of this future for a long time, starting a few years back, and now it’s finally happened. 32-bit application support has been removed from macOS Catalina.
20191013/https://en.wikipedia.org/wiki/MacOS_Catalina
With all the changes happening to macOS, it is certainly clear that Apple is trying to make the desltop operating system a lot more like their mobile operating systems. That is, the money-making systems that are selling in absolutely massive numbers.
Also note that it’s been quite some time since Apple dropped support for HFS filesystems from macOS.
Well, the compatibility was fun while it lasted, and it made vintage computing a bit easier on “modern” hardware, but with all the rage from tablets and smartphones, the average modern computer user really doesn’t care all that much about the historic computer hardware.