GNU projects and the free software movement are *far* bigger than one individual.
Demanding people stop using GNU software due to association is just the mirror take of those claiming the FSF can't survive without him.
He is not that important. Hold him accountable.
And I'm not exaggerating here - many of the big alternatives are essentially controlled by Google, and Google pays folks who RT harassment of trans children to work on it.
LLVM has a debugger, but see my above remarks. Autotools lacks a direct alternative because most of what it does is just wrong and doesn't need to be done at all.
Google is far from controlling LLVM. They were contributing a comparable amount to GCC, binutils, etc. back when they still used it and before they'd decided to migrate to LLVM.
The binutils replacements were a lot more focused on macOS and Windows before caring about Linux too.
https://foundation.llvm.org/docs/board/
A quick attempt at figuring out their employers:
IBM, ARM, Apple, Argonne National Laboratory / US DoE, Apple, Saint Petersburg State University, LLVM Foundation, SiFive, Red Hat
They're on the board as individuals though, not on behalf of employers.