I think there is more mental illness/derangement behind all this than just PDJT.
Surely, President JEB would have re-triggered BDS. But so would have a President Cruz or Rubio, likely to lesser degrees than TDS.
The overarching issue is that democrats do not recognize any republican as legitimate, at any level, Fed, State or Local.
I have never considered voting for Jeb Bush, I had nothing against him, but voting for him for president would have been to soon after is brother and I was a big fan of George W. I did not care for their father and held I recall correctly my nose when I voted for him. I liked Barbara a lot better but she did not run.