As per Arch wiki

Arch is a pragmatic distribution rather than an ideological one.

If you’re a FOSS purist, you shouldn’t run Arch ethier way, because providing proprietary software for those who want it is one of the core principles of Arch.

Yeah, PFAS comes to mind. It took decades to confirm it’s harmful to humans but at this point it is everywhere and hard to get rid of. Worst part is they try to use other chemicals to replace PFAS, but again how harmful they are we don’t know and we will learn that decades later too because companies don’t want to make long term research before releasing the product. Enviroment shouldn’t be a billionaire’s testing ground.