Yes, it's been pretty bad for students this year, and definitely not what they signed up for. I don't think (planned) blended learning is actually a bad thing though, as long as the limited face to face stuff allows them to develop the practical (or whatever) skills they need. I suppose arts/ humanities degrees have always been a bit like that, with limited lecture/ tutorial time, and the rest is solo work/ research in libraries etc.
DH works in a science dept in a uni, and they have decided that actually the big "chalk and talk" lectures to several hundred hungover students actually work better pre-recorded, with facilities to ask questions, and then the effort can be put into smaller group work/ practicals and so on. Group work can even be done online if necessary, though obviously it's better in person, as most things are. The students seem to prefer being able to watch from their own rooms at a convenient time, not distracted by people talking/ not being able to see the board or whatever. And the beneficial bits of lectures (questions and so on) can be addressed through a chat/ q and a area attached to the recording.
Of course, there is a huge difference between college/ uni age students and primary/ secondary pupils in terms of the skills for time management, motivation, knowing where to go to get answers, and general interest and competence in the subject... But in theory blended learning can work well, as long as the students (and lecturers!) are prepared for it.