What does he mean by "that ain't doin' too much"?
Native speaker’s answer
Rebecca
To "do too much" is a slang expression which means to "overdo" something, or to do some actions that seem overboard or unnecessary. When he says "that ain't doing much," he's saying that it's a level of interaction that is just right and not too much. Ex: You bought him a Rolex AND a car for his birthday? You're doing too much. Ex: This song is trying to do too much. It sounds messy and loud.