The process of homeschooling now with kids who are used to public school and parents who had no time to prepare for it is not really good data about the process of homeschooling kids who have had time to get used to it as a parent who has had time to prepare.

Maybe, but once you get past the hump of "Oh my god what am I doing?" It's a much better system overall. Same thing with work from home. Covid is a bad thing obviously, but it may end up being a good thing for the American worker and American family, bringing about a rise in homeschooling, as well as rise in work from home, resulting in more cohesive families in which parents are actually able to take an active hand in the raising of children, rather than delegating it to schools and daycares.

I broadly agree (at least in comparison to the school system -- I'm a former high school teacher and was homeschooled myself).

I'm not talking about homeschooling. If parents are around their kids for 2 more hours out of a day, that's a positive thing. It's not inconsequential.