One common point of trp seems to be that guys over 30 shouldn't act, dress or look young, because girls who like older guys want them to actually BE more mature and different from dudes her age, plus they'll never do it quite as organically and naturally as 20s guys anyway.

Makes sense on the surface, but what does acting your age mean? Is it more what you do or simply what you don't do?

Me being butthurt and reactionary, I often thought it means start wearing New Balances, tell cringey dad jokes, be out of touch with technology/trends and lamenting how "MTV doesn't play videos anymore!" All the while embracing greying hair, leathery skin and wrinkles.

That's going from one extreme to the other of course, so the real answer is probably in the middle. I myself prefer older women (40-60) since they're often nurturing and/or really extroverted and don't give a fuck. Maybe its similar with us? I'm simply not comfortable doing it since I still feel 23.