As someone who has experienced both the school system and homeschooling (by choice, rather than due to the pandemic) for my children, something I learnt along the way is that education doesn't always have to be in a formal setting. Also different settings work better for different children, depending on their learning styles and personality.

1.- Bedrooms or bedrooms are not for studying

For younger children, I agree. Even with a desk set up in there, my girls preferred the living room floor. They hated sitting still on any tale or chair. Perhaps their experience in the school and having to sit (often bored) for long periods put them off. Being on the living room floor gave them a certain freedom to move around as they wanted and, surprisingly they absorbed information better this way.

As they got older this changed. My eldest liked her personal space and her bedroom was it, so she would do nearly all of her work there, even her homework, when she went back to school for about a year, except when she felt she wanted company. Then she'd come out to the dining table.

My youngest (now nearly 18) does her work at a desk, but this is through official channels for highschool and she does indeed seem to have chosen a space as you describe.