You are right that we should not rely too much on these opinions, which are for political convenience and may change in the future if they believe that what suits them is something else.
Believing in politicians is one of most dumbest things to do because they are liars, more or less only.Quote
Anyway regarding bitcoin Trump would not be the first one who did not like bitcoin and happens to like it, plus I think he has seen a niche of votes from people concerned about privacy, which would be more generally Republican people, who do not trust so much the state and its CBDCs.
Politicians can change their mindset and strategy if they need to change it to benefit their political career. Entrepreneurs or businessmen can change theirs too but if their benefit is bonded with one thing like Peter Schiff with gold, he has been against Bitcoin for many years even he knew about it too early.Like politicians, I can not trust Peter Schiff and his words and I have conspiracy theory that he can accumulate bitcoin silently.
These two are only like dumb and dumber
I agree and I am very surprised that in the big country with many talented people, how did they let two very old men to represent two biggest parties again in the coming President Election. Nobody can replace Trump and Biden for their parties in the Election, that's strange.Quote
Besides, certain things like US regime's attitude toward Bitcoin is not up to the president... 
President is a job that is usually expired after 4 years or can be expanded 4 more years and a President can have that job up to 8 years maximum. After 4 or 8 years, they done their jobs and can think of other things.