In my own mind, 1994 was a couple weeks ago, not thirty years ago. It takes a conscious mental step for me to register that these candidates are demented geriatrics because they're still young in my mind because 1994 was last week.
This also applies to musicians as well as that creepy old dude I see in the mirror. No idea where he came from.
I suspect the vast majority of older voters are not taking that conscious mental step and are voting for young candidates that they remember from "last week."
This is not a justification at all. Merely a self reflection that I occasionally get caught up in time denial myself.