Yup, magnet and DC resistance are highly overrated when people talk about pickups. As with many aspects of electric guitar tone, these stereotypes come from a time when there was a far more limited range of options and so those differentiators told you more than they do now that the scope of what's available has expanded so massively.
Magnet do make a substantial difference, but a skilled pickup maker will know how to work with the magnet they're choosing to reach the sonic goal they're aiming for - it could be they want to make a dark and thick pickup with a ceramic magnet, or a bright and toppy one with an Alnico 3.
There are so many approaches you can use to voice a pickup, all giving their own unique sound, and I think the fun of experimenting with that is why people get into pickup winding in the first place.