The reason Trump is unconcerned about affordability is...

[Kablooie]

that he knows it won't affect the election because his henchmen have rigged the systems so that Democrats will never take power again.

I'm sure there are many, many ways important elections have been rigged.
We see a few of these disputed in the news but you can be sure there are many other plans that never see sunlight and are ready to go. If a Democrat wins an important race, Trump will have ways to contest it and throw out enough votes to ensure the Republican wins. I'll bet some of his discussions with Putin were about successful ways to rig elections.

Trump knows that Republicans will keep control of both houses no matter what the people want, otherwise he would be more concerned about the upcoming election.