He's amazing and reading his blog the other day prompted me to update my already kinda recent Emacs (I last build it in february 2022) to the latest master release.

I haven't found out why yet but apparently Emacs now compiles faster too. On my 3700X / 32 GB of RAM I now get, using make -j 16 bootstrap 1m30s for the non native-compilation and 2m30s for the native-compilation version (which is the one I use). That's down from about 4 minutes six months ago on the same machine: I think something changed that makes compilation faster.