I think you're underestimating the effect of poor direction from their districts, and in turn poor direction to the districts from the state and federal government on this.
Up until a month or so before the start of the school semester, we were still receiving communications about "if we start with in-classroom learning". These schools have set budgets, and large expenditures are planned and paid for over years, and to be faced with a hard fork in the road choice over a summer about whether to put all your eggs into distance learning (when many politicians were vowing students would be in classrooms) or to try for a hybrid approach, or to assume the politicians know what they're talking about and kids will all be in class come late August/early September, it's not hard to see how this situation could turn out as bad as it had.
Extreme circumstances require solid leadership. All it would have taken would have been the President (or even someone high in the Department of Education with the President's blessing, so it wasn't contradicted a day later) to say "we're hoping students will be able to return to class come the start of school, but we're allocating funds and directing districts to prepare for the eventuality that it may not happen, either overall or in their locality." and that clear signal that schools needed to prepare for this and would be supported in doing so would have made all the difference.
This whole year has been a comedy of errors. Like so many of those, what you're really seeing is just a tragedy.