I don't know if I am one or not, but I'll admit it's possible. However, if I am one, I tend to restrain myself for the most part- the only times I really get into it is when I think it matters. That means I'm either trying to help out a fellow player or trying to get a DM to make the right adjudication: mainly, it's about finding the right page for reference or keeping things consistent (with other, prior rulings or with a mechanic's or setting's internal logic).
To that end, I've been the one who rattles off the page number for TWF rules in 3Ed or 3.5Ed when someone else is looking for it, or correcting another player on how his 4Ed Fighter's Mark worked (he was underutilizing it and thought it sucked).
I don't think I've been involved in more than a handful of major rules debates at the table in 33 years, though.
To that end, I've been the one who rattles off the page number for TWF rules in 3Ed or 3.5Ed when someone else is looking for it, or correcting another player on how his 4Ed Fighter's Mark worked (he was underutilizing it and thought it sucked).
I don't think I've been involved in more than a handful of major rules debates at the table in 33 years, though.