The problem is much bigger than that. Today pretty much all mainstream languages rely on untrusted modules ecosystems, untrusted github projects, etc. If we wer

The problem is much bigger than that. Today pretty much all mainstream languages rely on untrusted modules ecosystems, untrusted github projects, etc. If we were to create language level boundaries to address those problems, we would need to deal with Spectre as well. Either way, my point was that it's absolutely possible to fully mitigate Spectre in software. A particular group of people just found it too hard to do for the things they work on. Doesn't mean the same applies to anything else.