So.... don't fully populate a bad system with max tier orbitals on your own? (or at all for that matter?)
I'd hazard a guess and say that a lot of players are starved for new gameplay content, so you can't really blame them for having a go at this new content here.
Beggars can't be choosers. I tried to find a 'nice' system i.e. one with at least one asteroid belt, and gave up after a while and settled for a rubbish enough system ... a K star with a single plain gas giant about 500Ls from entry - meh indeed but I wanted to try the gameplay loop myself in-game and not just read about it online.
Work with others, find people to work with, help each other out, only develop systems that are "good". The answer to a collaborative activity being hard for an individual isn't to make it an individual activity.
Looking at the Galmap, it seems everyone is doing their own thing as so many systems are already claimed, and I can't really blame players especially given it's clearly designed for individual play, with the
implied option to make it a group effort - as in sure, you can have "gentlemens' agreements" to help each other out but the game does not facilitate this beyond dropping commodities at a given construction ship - the game doesn't allow for sharing a system explicitly at all. One player, one system architect. Maybe others are willing to slave away for other players, but that's probably a small minority.
And good luck for finding players that will just help you (if they're not on your squadron at least) - and why would they? It's a dull activity and don't even think it pays that well unless FCs with huge margins are involved. Many players (myself included) also don't want to play with others and work around each others schedules. Plus, I actually find Elite as one of the worst games to collaborate in.
If you saw that on Inara, that info would've been added just before the person reporting it in purchased them all. Inara's a bad source for these things.
Ain't that the truth - though often still better than having to rely on the awful in-game UI.