By what % by How many millions of CR an hour better are they than anywhere else you would rather stick with them and call for the devs to change the game so you don't have to adapt to the game changing situation.
If the system didn't have those missions due to it being in bust or civil unrest or lockdown, would you still refuse to change your "only one way to play in only one place" and demand the Devs change the BGS so that those factions never not offer only the bestest most payingist missions?
I think the problem with this situation that makes it so much bigger in people's minds is the fact there really isn't a good answer to this situation. Most of the situations in the game, if something breaks, either it fixes itself a few days later or there are relatively balanced actions you can take to help correct it. With this situation, there is basically nothing anyone can really do about it. From all appearances, the comparatively easy availability of UAs as well as the apparently massive number of metas needed (which if purchased, have to be purchased at a substantial loss, despite being critical to the station's operation) means that you have a situation that there is really no way to counteract.
A relatively small number of people are in a situation where they can counter a much larger number of people even if they attempted to fix things and can do so over a sustained period of time. Simply put, FDev has designed the game in such a way that it does not make sense to fix problems as it will just drain your resources, likely without accomplishing the goal you are trying to fix anyway as it is orders of magnitude easier and more cost effective to destroy than build in this particular case. In addition, it's a very artificial mechanic that makes absolutely no sense in the scope of the story line. Even if you accept the high level of metas needed to counter a UA, it makes no sense that a station unable to function wouldn't be offering top dollar for Metas to get back up and running, otherwise they die. Similarly, it doesn't really make any sense that they would start re-accepting UAs after getting into such a situation.
This leads people to feel powerless against the attack, which is why people end up lashing out against the UA bombers. Really, the frustration should be directed at FDev for implementing something so out of balance that doesn't really have good story line justification for being a thing, however, that's a level of abstraction that is hard for people to realize when dealing with being frustrated at feeling powerless. That feeling of powerlessness to address an issue absolutely kills games. It's good to have competition and mechanics that encourage people to compete and provides balanced adversarial activities. Most such activities in ED are pretty well balanced. When things are drastically out of balance however, it kills people's enjoyment and motivation to play as you are just being bullied around with no ability to respond effectively at that point.
Yes, you can take your toys and go play in a different sand box (move to other locations), but that doesn't change the sense of powerlessness to deal with the situation, and leads to a feeling that it could just keep happening (even though the galaxy is big enough that that really isn't true.) Take psychology out of the picture and there is no issue, but you take the morale impact it has on people and you have a substantial problem that could pretty easily be fixed by improving the balance.