A thousand or more of the original bubble systems have a population less than the minimum a single "claim, build an outpost, move on" colonisation can provide.
"Some systems/stations are small and don't offer a lot in the way of services" has been a part of the bubble for the last decade.
More than 10 years ago I went to Sag A and back in a Hauler, ~20 Ly range with a Nav Comp of 100 Ly. It was the weeks long adventure, and I was scared as hell on the way back, beaten and cracked, will I reach the bubble alive.
The first human settlement I was reaching for was Sarmiento De Gamboa Port in Pand, a lonely lousy extraction outpost, the last human habitat in then-bubble. A small, hundred or so inhabitants, mining colony on a dark and gritty outpost. But when I docked and could refuel and repair and go to bed, it was like coming to Times Square on December 31st five minutes before midnight.
Never ever underestimate the magic of a lonely outpost in an empty system with a dozen or so people on it. That's where the legends are made.