I can see the point of a new mix/master if tracks were mastered for vinyl and the remastering improves how it sounds keeping the vibe of the original. For me, the PF's Animals '18 remix sounds more detailed as if it was painted with smaller brush strokes. Nothing has been made too prominent at the expense of anything else, but the '25 RL Trouble master sounds like every instrument is trying to be more upfront than everything else making it sound cluttered and fatiguing to listen to.
One album that genuinely baffles me though is the stooges' raw power. I have a few versions of this album and all sound a bit like they were mixed/mastered by someone with cotton wool in their ears.
The original mix sounds like there's a blanket over the speakers, the 1997 mix sounds like its being played too loud through speakers with ripped cones, and there's a 'legacy' version which sounds like the guitars are in another room with the door closed.