It's insane how much destruction Alpha had caused
I read a fan fiction that was the usual time travel fix it, and it really is insane how many people are better off when Alpha was killed off early. These are the people that potentially get saved because of this:
Her husband
Jesus
The people whose heads ended up on pikes: Tara, Aggie, Tammy Rose, Rodney, Adeline, Enid, Henry
The Highwaymen
Carol's sanity
Earl
Mary and her sister and likely a lot of the Whisperers
Laura
Siddiq
Other Hilltop people
Anyone Beta killed as well. (I already included Mary and Laura but there were a lot of unnamed characters too)
Beatrice
The original Alpha and the Whisperers, the ones who just peacefully wandered around in the wilderness (shown in Tales)
Beta himself might be better off. For the particular fic I read it would depend on if his therapist's life gets saved too, but even if that doesn't work out, at least he'd be keeping to himself instead of going around killing people