I haven't really seen negative comments about the educational attainment of train drivers here. My impression is the that posters are discussing the length of time it takes to train for different roles.
So it seems it takes around six months to train to be a tube driver and achieve a salary of around £50,000, but around four years to train to be a teacher or nurse and achieve a lower salary. It takes six years to train to be a vet, they earn an average of £31,000. It takes eleven years to train to be a barrister and they earn between £20,000 and £40,000 (a bit more in commercial) in their first year post qualification.
It's the length of training not the name of the qualification that is relevant.
Most posters have felt that other workers' pay should improve rather than wanting tube drivers' pay to be cut, although some posters have explained why across the board wage increases are not a good idea.
I think what is making people frustrated is tube drivers appearing to not appreciate that their pay and conditions are pretty good in the general scheme of things.
Saying that everyone who comments should become a tube driver is daft because there are a finite number of driver jobs.
Saying everyone else should improve their own unions and take action is not a realistic argument. Nurses simply can't walk out on their patients for 24 hours, the police have no industrial rights, vets would have to refuse to treat sick animals. It's just not that easy for other occupations to withdraw labour.