People turning this into a moral question about killing babies completely miss the point of the question.
The question, IMO, has to deal more with how time works.
The case for “No” - A) Moot because time travel is impossible. B) In the case it were possible, if it would effectively create a new universe and destroy the old one, along with billions from future generations - including most, if not all of us.
The case for “Yes” - If through some quirk of the timeline all the people who were born in ours still managed to be born (except Hitler) and maintained the same relationships as today (whether it be in parallel universe or our own)? Then the answer is yes. A universe where the sheep of the early 20th century followed someone else would undoubtedly be better for all Europe.
I describe myself as a little dose of toxic masculinity.
