If you are a really an old hodler then you already answered your own question. How can you safely got this far if btc isn't safe from being hijacked? Because, if it did then it was being hijacked long time ago. They have a better chance doing it since the network that time is much weaker and the prices are less expensive than compared to today yet they still didn't do it. That simply means that btc is truly strong and cant be hijacked.

What the governments are only doing is they create their own kind of bitcoin/crypto which is centralized that they can fully control but no one is going to buy that. There is only one literal hijack that can happen you, that is if when you are not careful on securing your bitcoins.