"freedom is teleological positing, it's when you use abstractions to reason about what goal you want to pursue. "
interesting definition of "freedom". to use abstractions to reason about what goal you want to pursue. i must admit that does not clarify for me what you mean by freedom, particularly in the context above in which you used it. but i don't know that it matters.
if i knew for a fact that human life would cease to exist in 300 years, it would make literally no difference to my life, desires, priorities, etc. i might feel a touch disappointed that i won't be around to witness whatever ends this failed experiment. i would not suddenly change my lifestyle, or start voting, or devote myself to the future of humanity.
on the other hand, if i knew for a fact that human life would cease to exist in 1 year, i suspect i might have some ideas about things i'd like to do differently.