It's because they don't understand decentralization, and aren't around many Bitcoiners to read about Bitcoin in their daily life.
It takes time to understand the power of the Nostr protocol. Especially if you don't follow Bitcoin. It took me almost 1 year to start to understand it, and see the power behind it.
The future is creating a client, kinda what like primal is doing. Except primal went the subscription way which is not a good busines model going in the future.
Truth social is also a military tool built for Trump, since the military is running a operation at the moment.
I won't survive long run, unless they adapt to nostr. It's only useful to see what Trump is saying, other than that it's boring over there.