A horrendously uninformed comparison. It's extremely tedious to still be reading this Pfizer/FDA copypasta at this point. It's more like if Ford wanted to release a car with some kind of completely new engine or propulsion type while having done almost no safety testing at all. And if, at the same time, they were telling you, "this is just like every other car we've ever made, what's the big deal?" it would be as good of a hint that they were hiding something as it turned out to be in the case of the mRNA vaccines.

Even in the case of traditional vaccines, it was generally expected pre-Covid that years of testing would be undergone before a rollout to the general public, so even putting aside the question of novelty, the more apt comparison would still be something like "Ford pushes out a new model car with a significant body redesign while doing a bare fraction of the usual crash safety tests."