I don't understand why someone would be envious, or if they are, why it matters, to be honest.
As Hetty58 says, there is personal choice involved. I realise that that is a bit simplistic, as not everyone has the job that they would necessarily have chosen in an ideal world, but the fact that someone else has a job that you (generic - not getting at anyone) would have liked, or is able to work in a way that would have suited you but your own working pattern doesn't allow, doesn't mean that that working pattern is wrong.
I suspect that one of the many things that will change as a result of the pandemic is that working hours and location will be something that people will factor into their priorities when deciding on which jobs to apply for, or careers to work towards.
We will move towards a much more flexible way of earning a living, which for some will mean regular hours at a fixed location, but for others will be something that they can fit around their personal or family lives and will be paid by results, rather than presenteeism.