Perhaps management was not in the meeting. So there would have to be a process of reporting colleagues to management and management dealing with the reports. None of which would be necessary in the office. I honestly think people are naive if they think everyone that WFH is working just as they would be the office.
Almost certainly not, but people are describing ongoing patterns of behaviour not one-offs. And in remote working more than in-person, managers need to have good strategies for being across with their teams, what they're doing and how they're behaving.
I fall into the camp of 'if we're still being productive and respecting clearly set boundaries, and people are feeling as positive and motivated as possible, then I don't care if they don't have a full face of make up or a tie.'
So for me, staff who repeatedly failed to have their cameras on during zoom calls, despite it being organisational policy to do so and without a specific agreed exemption - that's a management issue to deal with. It affects the team (as we've seen here, people feel resentful about it) and affects the way in which people build and maintain relationships in remote working.
We had these principles in our organisation before the pandemic (we have offices all over the place, including in different countries, so virtual relationships have always been important.)
So if people aren't living up to their end of the bargain, that's on me as a manager to deal with, working with the resources my relatively well-managed organisation has given me to deal with them (clear and well-communicated policies, a structured process for dealing with behaviours that don't meet the standard, good ways of measuring productivity and effectiveness of individuals and teams.)
I have one individual at the moment who is absolutely taking the piss. She was mildly taking the piss before the pandemic but it's escalated. So we are dealing with it. The flipside is that my team productivity is much higher, I have to stop people from working rather than the other way around and the main support I find myself giving is how to build effective home/work boundaries for people who haven't been used to doing so.
That said I am not sure about the policy of the organisation in the OP. If they want people in the office, they could just say so, rather than issue thinly veiled threats about promotion opportunities.
Yes, that was the clue to me that it probably isn't managed well.