Yeah that's true. It's like some people rate TI's and LaBella Flats and to me, those aren't in my top 5 flats.
IMO/IME, I reckon it's how the strings mate to your pickup. I've tried the same string on several basses (p-bass and jazz) and they sound garbage. Then I put them on my Warwick and they sound perfect.
So on my Warwick I have GHS Flats, my parts p-bass with MEC actives I have Dunlop Flats and my daughters p-bass with DiMarzio Relentless Middle pickups has the Fender 9050L strings.
But yeah, definitely horses for courses 😊👍🏽