This is not new on stake, Maybe you are just getting to know about that features on the casino.
I have also seen that feature of either 2fA ir passkeys on a few cryptocurrency casinos that we have around.
I use 2FA on Stake, but it will still require you password if you want to login. 2FA for withdrawal if you set it, or you can use email authentication for withdrawal.
I don't know the reason but I get used to it and with crypto gambling I don't even add 2FA because I rarely leave any balance with them when I leave.

I like 2FA, probably because I am very use to it. Even on my dormant accounts, I set 2FA, both on casinos and exchanges.