Paper Bitcoin is going to exist wether you like it or not and it's not going to be the real thing, and you're going to get rugged with it, the whole point is what advantages are you getting by using paper Bitcoin, and wether they are worth the risk of the rug, I think liquid, ecash are worth the risk, lightning is worth to the point of being essential, ETFs though are stupid, you literally gain nothing, just a false sense of Bitcoin exposure you can just have with your own keys.
They just don't want the responsibility of managing their keys, and are willing to trust, and they gain nothing more than this, and will be rugged.