People at large are not supposed to put money in printing presses they can't use properly, they are supposed to put money in books made by those printing presses.

Ethereum is definitively unsafe, it's basically impossible to create code without any bugs, and it's impossible to prove a piece of code doesn't have any bug. That defeats the all purpose of Euthereum.

Bitcoin is just unsafe by nature for the user, although the protocol itself is most probably safe.