Given 'There is nothing ungrammatical or wrong about saying  She's a real Johnny-comelately,  but it grates.', would 'I'd rather you use a different way to phrase, "She's a real Johnny-comelately."' be a logical outcome?
There is nothing ungrammatical or wrong about saying  She's a real Johnny-comelately,  but it grates.###I'd rather you use a different way to phrase, "She's a real Johnny-comelately."