It's interesting to hear your experiences. Mine have been the opposite. Across my four councils, I would have expected around a hundred public attendances since March. I've seen six. Some councillors have been unable to participate, or have chosen not to. Our district and county councillors come to all of our meetings anyway, so it has made no difference to them. The conduct of my councillors during virtual meetings has been atrocious, as they don't see it as a formal meeting. I'm going to suggest a Section 137 donation to Alcoholics Anonymous, then tell members to declare an interest before voting! I've had a chairman watching football on TV whilst chairing a meeting. Members have invited their family to join them for the meetings. Others have got up and left the room without any explanation. Gossiping about neighbours. Telling stories completely unrelated to the work of the council. You name it, I've seen it!
As soon as we were able, we reverted to face-to-face meetings, although we've had to go back online for the current lockdown.
Virtual meetings are a godsend for planning committee meetings, where we rarely have more than one application to consider, so the meetings last between five and ten minutes on average. Doing that from the comfort of my armchair has been beneficial.
I'm sure it's worked well for some, but not where I come from.