Bill Clinton hasn't been in office 20 years and is constitutionally ineligible to ever be President again; he's already a known creep, possible rapist and perhaps (though in my opinion, doubtful) a pedo as well; and HRC is out of politics for good.
The Clintons are pretty much no longer essential in the slightest to the modern Democratic Party. I feel no obligation to defend either of them, particularly Billy.
Furthermore, wild conspiracies about the Clintons have circulated among Righties for the better part of 30 years, yet we've lived through two subsequent Republican administrations who haven't lifted a finger against either of them.
Not to mention, pedophiles should be exposed and prosecuted whatever party they belong to.
tl;dr I have no clue why Trumpies would offer this deal