I don't think they're saying journalists are any more responsible for it than anyone else. It's more like a "do as I say, not as I do" situation.

As in "I'm not going to guide my children towards the trades, but you definitely should."

I think they are imagining a world where journalism is as well-paid and comfortable as the tech industry, and therefore it's somehow hypocritical for journalists to cover less comfortable industries. I don't really think it's worth responding to to be honest.

No, OP is saying they’re hypocrites

that does not follow from the parent comment. it's more of "they are making the problem worse" by (presumably) sending their kids to liberal arts or theoretical studies