There's currently 391 carrier admin systems, so if someone (some team of hundreds...) goes to the trouble of getting 40,000 separate alt accounts levelled up to the point of having a carrier and fills up every slot in every carrier admin system in them ... to be honest, I'm quite happy to let them have their well-deserved one week of fame before Frontier says "due to popular demand, 400 new carrier admin systems are now open" to troll them back.
Mmm, fair enough, didn't realize there were that many admin systems.
Still, there are plenty of systems that they could block up and cause issues. The connector to Rackham's Peak, for example. It seems like a good idea to fix the preemptively, anyway.