That's true, but there are outright trivial things a lot of sites just don't do to limit the impact of compromise. I just sold some Bitcoin for example (I know right...) and the exchange doesn't require any special credentials for initiating trades or withdrawals: just the same password and 2FA code I use to login to my account.

All the good stock trading sites I've used in the past have had separate trading passwords, it just makes sense.

Do you often login to your Bitcoin exchange account without performing any write actions? If the majority if the time you're not logging into a read-only session, having an extra password seems rather pointless. If an attacker has compromised the 2FA system, they've most likely compromised your device.