There's another point, which I should mention: the kind of job that is most suitable to part-time remote working is also the kind that happens to pay very well

There's another point, which I should mention: the kind of job that is most suitable to part-time remote working is also the kind that happens to pay very well and, as you point out, not the lot of those who are the most dependent on getting a job. So yes, there's a bias in my proposition.