Ruin Explorer
Legend
Bringing up neurodiversity here is frankly at best a total red herring and at worst could be seen as rather manipulative (I presume that is not the intention myself). I have severe primarily inattentive ADHD (very much not the relatively mild kind that's more common) and have been diagnosed as autistic (though I disagree with the latter given some lolworthy elements of the specific diagnosis, but that's a long story). Certainly a probable majority of people I know IRL who play RPGs either have or could/should have some kind of ND diagnosis.No; with my (heavily laden with neurodiverse individuals) player base, that devalues the advancement experience.
And yet, none of the groups I know of locally like milestone.
So I don't think ND has anything at all to do with the opinions of your players re: advancement. In fact the only person I know who really loves trad advancement is the one person is definitely not ND! So I would suggest it's purely taste and that different ND and non-ND people will have tastes independent of their ND status here.
As for your anecdote, ok, cool - all the ones I know "locally" do like milestone/fiat levelling in level based RPGs so I guess that cancels out lol. It would be genuinely silly to deny that it is popular though.