for certain keywords and niches power is more important than relevancy. I'm thinking here about stuff like gambling / casino, we're all seeing expired domains that had nothing to do with gambling (before being acquired by SEOs who operate in this industry) being made to rank due to their powerful backlinks profile. It's true that most of them only rank for a short while and then google tanks them, but probably that's how this niche goes...
Or web hosting, for example, which is a niche that can have backlinks from 100s of different industries without getting penalized as every industry uses web hosting and when those sites link to their preferred / recommended web hosting provider there is very little topical relevancy between the 2 types of business, so it's actually recommended to use powerful backlinks (PBNs and niche edits) over topically relevant (but usually weak) backlinks if you're trying to rank in this niche that is so competitive...
Anyway, I could find way more niches that benefit from power more than relevancy if I put my mind to it, but hopefully the point is clear already