Born and raised JW and also didn't know many "window washers".
The congregation I attend has many a techy-type JW, business owners, fire fighters, accountants, CPAs, a couple of architechs, a doctor, a few nurses, LPNs and CNAs, a couple of store and restaurant managers, chefs, vehicle mechanics, a few that have cleaning businesses, and several of the JWs HS graduates have started their college education. Quite the diversity in occupations.
Most posters here just use those derrogatory terms in order to show their ignorant bitterness against the JWs in general. Sad for them, really.
DY