No. You're a justifiably upset player who was deliberately misled into playing the DM's homebrew rule set under the guise of "We'll be playing Game X!" (which isn't at all the same thing as "We'll be playing heavily house-ruled Game X!").
Well. . . calling a Bait & Switch GM on his BS recruitment tactics should be done. Absolutely. That said, it probably shouldn't be done in the middle of the game session. This kind of thing, as a general rule, needs to wait until after the session -- otherwise the complaintant is stopping the game for everybody else to focus on his own issues with the campaign, and that's really no more approrpriate than what the Bait & Switch GM has done.
If it does happen during the game session, it doesn't make the complainer a "Rules Lawyer" but it may very well make them a whiner, a poor sport, or a selfish bastard. And you can safely assume that some of the other players are thinking one or more of those things as the complaining player derails the whole game to lodge a complaint in the middle of actual play, bringing everybody's fun to a grinding halt for the night.
It's hard to recover from that kind of thing, generally. What was the problem of one player is suddenly the problem of all players. I've seen this very thing kill a good five or six campaigns (at least four of which were a load of fun for the other players until The Complainer derailed them).
This is why so many people suggest that DMs and players alike address disagreements after the session ends, rather than during the game.