is this true?

so for context i posted on a fb group in texas that i was looking for an amazon parrot. i’m okay with getting one that is being rehomed or one that’s a couple years old that’s up for adoption. i figured that it would obviously take a while for the parrot to adjust to me but eventually we’d be able to form a bond(through hard work and time) but this breeder messaged me saying that any bird being rehomed for a lower fee will be aggressive. is that true? should i just buy a baby instead?