There are lots of players who don't use PT3 or HEM or equivalent at 25NL to 100NL. Many are easy to identify if you use a HUD, since their stats show them up to be bad players - if bad players were to learn to use these products effectively, they wouldn't be quite so bad, their stats wouldn't suck so much, and they wouldn't be so easy to exploit.
This isn't to say that there aren't good players who don't use one of these products, just that I seriously doubt the bad players are or they wouldn't be so bad.
These are the guys you want to sit down with. Keep the above thoughts to yourself, don't point it out in chat (tapping the tank).
gg and gl!