But technically you can also do that with chromium and gecko, but it's a lot of work, so very few do. And those that do don't cut the line, they'll almost all still follow upstream and just apply their changes.

So in the end, they're still dependent on the decisions made in the US. That doesn't need to be a problem, but I don't think "you can get the source code" really changes that.

> but it's a lot of work, so very few do.

sure but a nation state that takes digital sovereignty seriously could easily devote some resources towards maintaining their own fork. Thats the point. Hell, north korea has their own special linux distro