Nobody is forcing. If you don't like it, find another job. But a requirement to be present in a meeting is not unreasonable, and camera on is a closer proxy to physically present than otherwise.
Remember what we did before the lockdown? Call-in meetings? No camera. This is the same thing, really but now we can do things like share screens. My team has one meeting we ask everyone to have their camera on - the sprint review. That's every two weeks and everybody is there with cameras on. Otherwise, nearly the whole team as their cameras off during meetings.