I'm not sure I understand your question, or if it is even addressed to me. If I say "Yes, I think time travel, etc., is science fiction", you are going to ignore me? What's that all about?
A lot of my favorite sf is about religion: Blish's A Case of Conscience; Boucher's The Quest for St. Aquin; Miller's A Canticle for Leibowitz.
On the other hand, I dislike new age stuff in sf, where the hero is able to travel faster then light just because his Chi is in allignment and he tries really, really hard.
I'm not sure why I like the one and not the other, but there it is.
This is the race that will rule the sevagram!