Most people consider rich to be about "twice what I earn/have" and it slides.

I think rich is much better looked at from the time perspective - if your time is yours and not unwillingly sold to others; you're rich. If your time is not your own and you have to sell most of it to live, you're not rich.

And yes, I would put anyone who can comfortably retire before social security kicks in (so, early retirement/FIRE) as at least rich-adjacent.