It is rhetoric that tries to paint the picture that his supporters must be racist and transphobic, or at the very least tries to create a chilling effect where people are afraid to come out in his support for fear of being labelled as such.
> He questioned Harris' racial identity during the campaign.
It was an obvious jab at the identity politics of the democratic party. Besides - regardless of how stupid it is - questioning someone's racial identity does not make one a racist.
> He claimed at numerous rallies that boys would come home from school as girls without their parents knowledge.
I'm sure he means that literally and there's clearly no explanation for wanting to ban the promotion of sex-reassignment to children other than being transphobic.
Look, I don't like the man either and I'm nowhere near what he represents politically, but these attacks are ridiculously transparent to me and anyone who isn't so overjoyed to swallow them as truth they've become completely blind. It's fooling nobody but the already fooled. To everyone else it's actively off-putting.