No, not quite.  He stated that in his opinion kneeling during the national anthem is not offensive.  He did not even address offensive language at all.  You introduced that idea and are ascribing it to him.  
As for "the total bankruptcy of leftist moralizing"  -- wow! It's not clear to me what "leftist moralizing" is; nor is it clear to me how it differs from any other kind of moralizing.