I mean, OMD normalized Peter being single for a while even if it wasn't liked, he even briefly got a kinda liked ship with Carol, while OMD is unlikely to ever be seen as a good thing in general, Peter being single isn't liked more so because post OMD screwed over his character to make him into Spider-Manchild, and the other love interests were annoying.
Let's put it like this, imagine if Norman is resurrected in Clone Saga, but instead of interesting stuff, all the stories that use him afterwards are terrible, this would make people more annoyed at Clone Saga because now, because of it, a classic villain is resurrected and really lame, and that's how single Peter is viewed, OMD is a bad story, and the stories where Peter is dating someone who isn't MJ are bad, so that gives more reasons to not like OMD, but if post OMD did get stories that are only good because Peter is single, or if it gave him a love interest that is generally seen as better than MJ, then OMD, would still be seen as a terrible story, but a terrible story that gave us a good thing.
That's the benefit Norman has, asspull resurrection in a terrible story, but hey, Norman had cool stories afterwards, so that's a good thing that came out from that terrible story.