Welcome!
I had a conversation with another user in Building MKVToolNix with Gui on a mac where they succeeded in building their own version on an Apple silicon mac. Personally I do not own an Apple silicon mac and I have no intentions of buying one. Therefore I will likely stop providing Apple binaries at some point.
No one else has stepped up to build Apple silicon binaries for me on a regular basis; even the homebrew folks only re-package the DMG I still provide.
So… yeah.