GPs and Pharmacists may be able to get extra work at will, but I do not think that applies to most professionals. It certainly did not apply to DH and I
I absolutely agree someone in the position of Rishi Sunak's parents and those on the bread line is very different, but I do get irritated equally by those who assume if you are in a professional job then you have absolutely no experience of living on a tight budget and have never had to count the pennies and therefore cannot understand the problems.
Because at a certain time of their life someone is in a comfortable professional job does not preclude them from having been in deep poverty at an earlier stage in their adult life. Some times life circumstances can impose burdens. Friends moved from Scotland to London at a time when the price differential between regions were high. They went from a 4 bedroomed detached house to a 3 bed terrace, but still needed a large mortgage. Once they were in, mortgage interest rates started their vertigenous rise to 15% and over and they were counting every penny, 30 years later their DD's DH changed careers, becoming a policeman and they he had to go through a very poorly paid year as a probationer. A comfortable life and enough money now, neither guarantees the future nor necessarily refelcts the past.