Why are people saying this plan is stupid?
His goal is to erase the discrimination of the silver-eyed race that got so bad they're near extinction from getting hunted all the time.
And how would you go about fixing that? Well making one of the silver-eyed race a savior of humanity will surely work? And guess what, if we look at astra's current time, it DID work.
You could say that he's selfish for putting his own wishes before his wife's. But when his wife got almost killed in front of him (while almost dying himself) for living the most peaceful and unobtrusive life you could imagine, your priorities will change.