I do. Busier areas should be uncontrollable, big systems should be uncontrollable.
It is probably not what player groups using the BGS as their personal playground would want thought. But if the intended use of the BGS is to provide the impression of a living and breathing galaxy, then a few players shouldn't be able to affect big system - and in the context of the inhabited space all players together are just a few.
Changing this would now create a lot of problems as FDev gave systems to player factions without any thought about lore, the rest of the player base and any other consideration beside pleasing player groups.
What do you define as big here? 10mil? 100mil? 1bil? 10bil or more?
At least when talking about the 10bil+ sized System you can pretty much forget that a few players can randomly affect them using the current BGS workings. It takes planning and strategy to move anything % related inside, even more so when you want to open up such Systems to expand in.
Speaking about peaceful actions mostly; in Wars / Civil Wars you can still move things quite a bit, yet never in ways you can in smaller populated Systems.
Personal playground is about right, I mean why else would you otherwise want to have your own Minor faction installed by FD if it wasn't for the sake of creating your own mark on the Galaxy? That a lot of them are poorly thought out by their Lore among other things finally was realised by FD (albeit too late perhaps, but better late then never) and they're rejecting to implement MF requests these days if they fail the criterias for insertion. One of them is conflicting or non-existant Lore in regard to the Elite Universe.
The only thing that personally irks me is that both in the past and present there are Players / Wings who expanded their PMF over and over without the intention to take these Systems as theirs. Or just because they thought it cool to see their MF in as many Systems as possible, thinking that would be the way to build an Empire of their own. Which it isn't, at least not if you plan to keep it a healthy one.
Nowadays these people either lost interest and stopped playing the BGS as a whole OR are unable to manage the mass of places they're in OR <fill in reason>. All these Systems are now considered
Off limits to aspiring new PMF and the people behind them who really want to do things but can't. Just because their desired System they wanted to be in was taken over by another PMF in the meantime.