Yes. Limping behind limpers with weak, offsuit aces is the very definition of fishy behavior. You're just telling everyone behind you that there's going to be a lot of great spots to squeeze you wide.
I've been off studying on RunItOnce and playing tons of 5NL and now 10NL cash games. I haven't watched videos here in quite some time but I certainly know that Adam Jones isn't teaching people to limp behind with dogshit hands.
"I'm worried I'll be dominated" - This right here means you don't even understand the game conceptually. Maybe invest in one of the membership plans here and start working on your game seriously. You can't get good just by reading forums in today's games.