That makes a lot of sense for me. The number of crappy and normal pilots (the poor ones in the Macross Frontier's first episode for example) outnumbered for sure the brilliant ones. So why spending such money on state of the art variable fighters like the VF-19/22 when UN Spacy surely knows that a majority of its pilots cannot handle such babies ? Only brilliant pilots like Dyson can.
So logically,
Crappy and normal pilots (the majority) get : VF-11, VF-171
Brilliant pilots (the minority) get : VF-19, VF-22, VF-25