This is one of the most worrisome things I’ve read in rust forums in a long while, and I’m quite disappointed in this off the cuff response. I hope it was written quickly and isn’t the full story here.
Imho one of the biggest mistakes C++ ever made was not stabilizing its abi; swift just stabilized theirs and is already reaping the benefits, swift system libraries, the swift runtime, swift UI libraries, all dynamically linked and backwards abi compatible.
I don’t particularly like that one random comment in a thread indicates what appears to be a Lang team member suddenly revealing that a stabilized abi doesn’t appear to be on the table at all; I’d like an official RFC if this is case justifying reasons for why this is, and good technical arguments for something so wide reaching, instead of some breadcrumbs in a forum.