"Not being seizable" hasn't really worked out for bitcoiners who've been arrested. Or for that matter robbed at gunpoint.
This seems orthogonal to the ability to seize assets.
Managing your private keys is cumbersome, error prone, requires some computer literacy, the list goes on.
Tbh I have been kind of impressed by how fast L2 businesses brought back centralisation in every possible way. I guess it's more efficient for them.
In the same way, the internet was supposed to be decentralised, everyone being in charge of their own servers. But in practice nobody has the time to set up their own MX servers.
For most people, cryptocurrency is just another stock market / betting app.
If you believe that, I have some land to sell you