Of course there isn't anything wrong with telling your son or daughter that they are handsome or beautiful. But that's not what we are talking about,...
From a solely tactical rather than moral point of view... it's not like the right hasn't had a ton of success with accusing their left wing opponents...
Er, no it isn't, and as a parent you should know it isn't. It's why you wouldn't bat an eye if someone complimented your son on his throwing arm, but...