Somehow I cannot understand the key plot of the "Shockwave. Part II" episode. Why did taking Captain Archer out of his original timeline
cause the Federation to be never ever created?
What was so unique about him? Why couldn't someone else continue his work, now or later?
It is said in that very same episode that
space exploration by Humans will continue and Earth only needs 10 or 20 more years to re-start.
So, what am I missing? What was so important (actually crucial) about Jonathan Archer?