I understand that lmgtfy is usually used in a condescending context but that wasn't really the vibe I was getting from his post, considering how it was written overall.
it's condescending because instead of actually looking for and providing a source, it's p much just saying "you must be stupid so i'll direct you to the way that i would find my sources if i cared"
that probably isn't the impression he wanted to give, so lmgtfy was just a bad choice