Considering how Trump bowed down before Turkey about the christian Kurd fighters issue(basically abandoning people who were promised aid in exchange for dismantling their border security), I don't think he's going to care about Hong Kong too much
I can't stand the guy either, but his ability to mobilize his base can't be understated.
If it can someone be framed as a choice between the freedoms that Americans have died for and bending over to a totalitarian state I think it would be possible to sway conservatives into opposing these policies.
Do you want to help the people in Hong Kong or just start a war though?
Having China and the US grandstanding will make it a wedge issue and decrease the chances of compromise and a peaceful solution. At some point the parts need to sit down at the table and find a solution they can all present as a win.
