Using open source as a political weapon is much worse than this. Banning patches from Russian developers have already been seen. It is not the spirit most open source software developers would want to go, I'm sure. At least I would never lift a finger to patch anything that took part in something like you mentioned or as insane as sanctioning russian developers (or some other country/race/gender/etc.)
It is a slippery slope and in no time it would spread to banning Chinese patches and developers, with people getting riled up by people from .gov mails and next up Muslims and on and on.
Besides, show me one of those "all" you mentioned that has the right to do so. Do you think open source is American? It could just as well be they all ban the US. Just... don't.
Like a lot of commenters are saying, these blog posts are nice, but they won't change the minds of the legislators.
The legislators, in their apparent naivety, are living in a dream world where they expect today's volunteer developers to take on real and unfair legal risk for their contributions.
That's why I think open-source projects ought to make a real statement and ban EU downloads of their software. This will catch the legislators' attention. Making the lives of whoever is using the software (practically everyone) difficult will get the point across and force change.
This has nothing to do with discriminating against who _contributes_ to the software, which is of course a bullshit thing to do.
It is a slippery slope and in no time it would spread to banning Chinese patches and developers, with people getting riled up by people from .gov mails and next up Muslims and on and on.
Besides, show me one of those "all" you mentioned that has the right to do so. Do you think open source is American? It could just as well be they all ban the US. Just... don't.