Ah, so you generally think about how other people perceive if you have money or not. Enough to answer an internet stranger inquiring about your wealth, and flexing about retiring at 40 (congrats).
Maybe hthe GP is confident enough to have passed by the shallow indicator of displaying their wealth? The richest people I know personally (and who I deeply respect) absolutely delight in people under-estimating them, assuming they're "poor plebs" like the rest of us. They like money, recognize it's important and appreciate what it allows, but feel no need to advertise it.
I wear my shoes until they break. I wear Vans Sk8 old skool high tops most of the time.
I am also on track to retire by 40 if all goes well. (Which is to say I don’t have THAT much money)