If we're all professional pirates then why can't Mr Lightie exercise a degree of airmanship when following a medium?
And when you hear the wake turbulence advice from ATC, that's their obligation as per their procedures. And if we all read the AIP then we would all have a fair idea of what is Light / Medium / Heavy. I fly a medium category and as Airmanship guides me, I know to give myself space behind a heavy.
Therefor at your local CTAF you won't hear a "caution I'm a massive medium pole smoker...." Because that's your problem if you haven't already taken care in my wake