There is nothing wrong with, and everything right about, small penises. The more we mock men’s behavior and bodies, the more we ourselves create awful 4×4 behavior.
All penises are good. Sometimes the people attached are awful.
Alternatively, imagine saying this about another body part on another gender.
Cis men should have their gender dysphoria treated instead of trying to distract themselves with vanity projects like oversized vehicles. Just because you like their body the way it is doesn't mean you can dictate what they should want. Nothing wrong with a small penis, but that doesn't mean everyone has to want that.
Alternatively, imagine saying this about another body part on another gender.
Trans women eggs should probably realize they're eggs and transition (if that's feasible where they are and if not, go to somewhere where it is feasible) rather than having dysphoria beards, working out stereotypically masculine muscles groups, and acting hypermasculine to cover-up for their insecurities.