If I were Trump, my going-in position would be no discussions with any sort of a ‘presumptive’ selectee until the official nomination process at the DNC has been formally completed. The debate with Biden was something different, IMO, and certainly not at the level of “Harris is a legitimate candidate, yet.”
IMO, he should have just demurred discussing it until then.
Agree
Trump is giving Kumala free publicity and exposure as an equally qualified serious potus candidate.
Hopefully he’ll control his too-often verbal incontinence about even mentioning her much less name-calling