One problem with the idea is that not all aliens will be that advanced, and some of them should be detectable if they're that common, unless the super advanced aliens precluded their existence by being first.
They were going to upgrade us to a class B-1 civilization, but that was stopped after a second audit looked at the Politicians we have been electing....
“After they killed their first hundred thousand other people, why weren’t they arrested and jailed?”
“Err…”
“And why not arrest them after they stole billions from the public they were supposed to serve?”
“Umm…”
“I can understand voters making a mistake once… but repeatedly voting in the same autocrat?”
“Well…”
Show them this video and they’ll immediately commence a mass sterilisation program, like we do with invasive mosquitoes.