Which is precisely why it's irresponsible to give people the rope to hang themselves with by supporting 2FA seeds in password managers (much less telling them it's a good idea), IMO.

People take the path of least resistance; we know this. It's why, for the longest time, people used one password for everything. People don't like using password managers, either, but we would all agree that it's unacceptably insecure to not use them, because the alternative is "one password used everywhere, maybe with a single varying digit on the end".

I agree. Give the average person the ability to make a good enough decision for their online security with minimal effort. I'm having a hard time being that concerned with TOTP 2FA being an option in the same location as passwords when the most important accounts people have are often limited to completely unacceptable SMS 2FA (looking directly at you financial institutions). Whatever it takes to get people off SMS and Email 2FA is a big win in my book, even if it isn't the best option.