If Trump brings this up at each and every event, it may cause people to begin to notice the disparate number of events the two candidates organize and attend. Trump is EVERYWHERE and his large audiences include lefty disruptions, which he handles well. The Hildebeast attends only small events with well-vetted audiences that are fully supportive, ensuring she does not have to defend her lines of BS.
A few weeks ago a protestor got within a couple of hundred yards of her and she had a panic attack. Secret Service agents immediately took positions on either side of her, and one of them started whispering to her that it would be all right, and telling her to keep talking.