No, it's cause fitting a Scheme runtime around Emacs Lisp proved more technically difficult than they imagined, and the performance benefits of the Guile runtime were shadowed by the actually successful effort of integrating a native compiler for Elisp.
> I want lab-grown meat, Year of the Linux Desktop, and synthetic biochemistry to get the microplastics out of my body. The FSF doesn't care. They don't care.
Why would they? What does lab-grown meat have to do with software?
> They want to force everyone to be backwards compatible with decisions they made thirty years ago as if it has any hope of revitalizing an ecosystem that they deny even exists.
Personally I like having my programs work instead of playing a goose chase with a moving target. Common Lisp is also a thirty year old stable language, but I don't see you complaining.
> I feel utterly and completely betrayed by the FSF and want as far away from them as possible.
Good to know where the tokens fall. I sure as hell won't be giving you any of my money (not like I was going to before).
You're nuts.