I think the most critical thing is not who hosts it, as censored projects can
move elsewhere already (even though there are also 'accidental' issues), but
an educational campaign on how to sign commits. That said this doesn't mean
decentralization isn't important. I think we do need to decentralize more. I
don't know if we really have the tools to do this in the best possible way
right now. Decentralizing doesn't necessarily mean it can't be hosted by
multiple parties either.
If you look at an example of what I mean:
http://maidsafe.net/
Here we have a project that aims to decentralize at least the storing of
data. There are other projects to decentralize marketplaces. That's another
good example. Not everything legal is permitted to be sold on eBay or Amazon.
Even legal non-profit foundations have been attacked by certain industries
via the reliance on credit card and payment processors. This is why promoting
bitcoin despite its flaws is important. If we as individuals are going to be
in control and remain safe we need the systems to take control and put it
into the hands of the people rather than rely on centralized entities for
everything.