I mean, the game doesn't give you any goals to achieve or requirements, so everyone judges skills in the context of whatever goal they have imposed for themselves.
I tend to try and make the most powerful combat fleet and have the most money. If your goal is maximum combat power (usually measure by fighting multiple big ordo's 3+ radiants at a time), then combat skills do a lot more than industry skills. If your goal is to make as much money as possible, then colony skills do a lot more than industry skills. I think those are pretty common goals for a lot of players so there's a bias towards those skills. If your goal is to make it through early/mid game as easily as possible, then industry skills are great. I think people who play with mods like Nexerelin also probably have different skill preferences because there is a lot more of an 'end game' there.