One thing Snyder definitely achieved is that he made people talk about Superman like they never did prior to Man of Steel. Superman Returns was quickly forgotten and New 52 was as divisive as The Last Jedi. But Man of Steel actually brought a lot of new people into fandom, also pissed a bunch of others, but ever since he is never as noteless as he was.
Maybe it's just me, but MoS was my ray of light during dark era of New 52. Snyder's Superman felt much closer to home.