Frankly, I think the only thing it demonstrates is your paranoia.  What matters is whether the Bitcoin network functions according to its promises of (1) double-spend protection and (2) censorship resistance.  The architecture of the network doesn't matter so long as those two promises are kept.  

You could argue that with only four to six copies of the Blockchain worldwide, that there is a greater chance that these promises will be broken (and I would tend to agree), but I see that as a different debate.