Different instances of X can replicate between each other, so you're not siloing your development, and by decentralisation I was referring more to the fact that not all open source development has to happen on a single platform.
It's OK if some projects are on GitLab, some on Gitea, and others on Sourcehut.
True decentralisation can be a worthwhile goal down the road, but right now we can solve the problem using the tools we already have.
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