If the thread model involve physical device access, then yes. However, consider that the attacker might not have access to the device with this 2FA.

Many/most password managers do TOTP in their browser extensions already - at least on paid tiers. (Bitwarden, Lastpass for sure).

It's the only way a team can effectively use TOTP, which still offers a lot of protection.

If you have any concern I would gladly hear technical insight about the threat model involved. The cross-post on the Privacy communities sparked more conversation if you want to follow up on that point : https://lemmy.ml/post/12744864.

Extension "authenticator" has been around for more than a decade now. I am sharing something that is small, simple, auditable and secure (no permission to do anything but past on clipboard).