I'm fining the presets help people find ideas of what "works" with certain cabs from an amp pairing perspective.
Sometimes people have difficulty figuring out which amp works with X cab, which may not have an amp model that jumps out at them as as the peanut butter to the amp's jelly as it were.
TBH, I don't have a super easy time finding rigs that feel like me, on Aries, Cygnus, Helix, ID 60TVP, CyberTwin, any of this stuff. I really wish I had an internal mind map that could tell me, ok, from here, take a left, walk three paces, spin around twice, say three Hail Eddies, and you're good, but no. I have to fiddle until I find something I don't hate, make some cool variations, and season to taste.
When I pull up other people's presets, lots of the time I just go Next. When I check out the factory presets, same, but I do like seeing what the Fractal folks thought were good pairings, and with some, I actually can start there.
Which is pretty much exactly what you were saying
I hear everyone gushing about Cygnus, and I want to join the party, but my pre-Cygnus presets so far aren't great on it, with amp resets or without. As one possible way in, I've been exploring Leon Todd's recent Cygnus presets, and finding I need to balance them warmer and less upper mid bright to get in my ballpark at all, most likely less gain too. That's probably because I'm using an EJ strat in normal tuning, not a PRS with humbuckers in drop C, and I'm not aiming for chug-meister.
I'll get there I'm sure...