My kids are on an every other day from home schedule.
My 9 year old daughter went from loving school to hating school. She literally cries when she talks about her day because the whole thing feels like some sort of punishment to her. It is awful, whether back full time or not. It's almost like being in prison for them because they cannot be close enough to their friends to even talk to them, even at recess. There are no more meaningful hands on activities like art or gym because it involves handling equipment which would have to be sterilized.
They are honestly a lot happier at home with the remote learning. The only problem with that is it makes life challenging for mom and dad.
The quality of education is taking a huge hit as well. I don't think my kid is actually learning anything. On home days, she knocks out the work in about 2 hours. It is always busy work, doesn't challenge her in the slightest.
At first, I agreed with the APA and CDC recommendations for getting kids back in school, but this new form of school is actually worse than school from home in my opinion. It is not a "healthy" environment to be in for 6 hours a day.