Bitcointalk is a forum for a decentralize money bitcoin and other cryptos. I believe bitcointalk should be hosted on decentralize hosting and decentralize domain name or there should be a back up or mirror site for bitcointalk. We don't know the future they could ban bitcoin and also ban bitcointalk.org and other websites that supports bitcoin. USA getting desperate with de dollarization or Somewhere in the future china (2027-2030) will be the most dominant superpower would ban / sanction bitcoin.
I think it's funny when they talk about forum decentralization.

The point here is: what do you mean by decentralized? Without an administration? "Decentralized" hosting?
If it comes to hosting, whoever comes, there is still no minimally viable way to achieve this dream of decentralized hosting.
Start with the domain. Where can you get the decentralized .com or .org domain?
Are they going to say it’s the ENS service (.eth pseudodomains)!?
This continues to have a centralized service behind it. And in turn, it is not practical to access the forum this way. The forum was created to be a point of information about Bitcoin, accessible to the entire world. Not with the hurdles of additional configurations that people have to do.
And I'm not even going to talk about hosting... because in the end there always has to be someone behind the scenes managing the server.