They can't confiscate your money, which is a good thing about being with a fiat bank. On the other hand if it was a BTC "bank," unregulated, you never know what could happen, heck they could take your BTC and you probably would have no way of getting it back.
It's not illegal to deal with cryptos, some banks might not like it but it's not like selling drugs where the police can take it.
Luckily one of the main reasons Bitcoin is used is to stop using banks and there is no Bitcoin banks in existence..or if there is they have got it all wrong.