Ok what if one day SEC will ban all bitcoin ?
I suppose you dont understand the SEC stance about cryptocurrency cause most them are somehow crypto enthusiasts and their duties is to give investors security and also protect their fund. They are never against crypto.
They can ban exchamgers like binance to deal with btc
Yes but only if Binance in US break their rules and regulations
They can ban all the mining activity.
No, thats not part of their duties cause their duties have to do with anything that involve investment and capital.
The kyc they force on people are all ready bad
Yes, but when there huge number of scam activities and they have to protect the investors fund.
Note : Fiat is a failure system even the IMF have told the government the need of Central Bank Digital Currency.