That's a subtle reframing you've done there. "Solar" is an entity unto itself, but "coal" is a submember of "fossil fuels". Apparently "solar" doesn't get the same consideration, despite being a member of the "renewable energy" industry.
What about all the people working on coal plants and the related infrastructure?
The article said "coal mining jobs", not "coal miners" specifically. Coal mining includes jobs like truck driving and the other items you're asking about.
You've basically done a double-whammy reframing: solar jobs are "generic-anything in an entire industry"; coal jobs are only the literal miners themselves, in a 'narrowed-down' field from a wider industry.
What about all the people working on coal plants and the related infrastructure?
The article said "coal mining jobs", not "coal miners" specifically. Coal mining includes jobs like truck driving and the other items you're asking about.
You've basically done a double-whammy reframing: solar jobs are "generic-anything in an entire industry"; coal jobs are only the literal miners themselves, in a 'narrowed-down' field from a wider industry.