The problem with that promise is that it is enormously expensive for consumers to run Bitcoin nodes.
i don't know what scale you use when you say "enormously expensive" but it sounds like you have never bothered trying to run a bitcoin node before you make this statement. of course you aren't downloading a tiny app like a music player that takes up 20 MB!! but the cost is by no means "enormous". not to mention that there are a lot of different options to reduce the resources it needs such as limiting upload rate, connection count, storage space,...
Therefore everyone uses third parties, there's not that many of them and there's absolutely no way for them to stay resistent to regulations.
actually if someone doesn't want to use a full node they use an SPV client, which could still be decentralized and resilient to any kind of regulations or censorship.