If you want to not have this, have a system where people who depend on archaic work don’t have to.
If all I know how to do is mine coal and there is no realistic way to move to something else and maintain my standard of living, I’m going to support coal, no matter what.
Right, yes, education and retraining should be free and subsidized.
If someone wants to keep their standard of living, via coercion, by striking to keep archaic jobs, I'm going to have mixed feelings, at best, in supporting them.
When solidarity becomes about maintaining a economic status quo more than about what's best for everyone, it's not solidarity, it's system of seniority, which is inherently unjust.
If all I know how to do is mine coal and there is no realistic way to move to something else and maintain my standard of living, I’m going to support coal, no matter what.