I'd like to use a Yubikey, but too few of the accounts I'd want it on allow multiple concurrent 2FA sources, and since I won't have my Yubikey on all devices/wi

I'd like to use a Yubikey, but too few of the accounts I'd want it on allow multiple concurrent 2FA sources, and since I won't have my Yubikey on all devices/with me 24/7 it gets cut for HOTP/TOTP which I can have in multiple places. I feel like failure by services to allow multiple 2FA providers concurrently is a common weakness that is rarely criticized.