The first two guitars I got, back in my teens, were a Firebird V and then a ES-345. It is likely the Firebird had a fat neck and the 345 a thin one, based on specs I can see these days. I never noticed back then. At 18, I got a late 1920's L-5. That neck was very fat. I noticed that but adjusted.
Nowadays I like a medium thin neck best but still have some "59" carved necks on several instruments which I can play equally poorly!
The L-5 I got was from a studio musician who played for Chess Records for years. https://en.wikipedia.org/wiki/Chess_Records This guy good easily go from that fat neck to my much thinner Howard Roberts without missing a beat- literally.
It can be difficult to predict how a neck will feel. There are some with small hands or arthritis who may be handicapped with a fat neck. But they couldn't be as limited as this guy, who managed to do quite well. https://www.youtube.com/watch?v=aZ308aOOX04
I understand that guitars mean different things to different people. Many are very finicky, and I get that. Yet I reflect on working with traveling musicians, going state to state. Many, probably most, pianists did not bring their own pianos. Those who did said it was for the tone, not the feel of the keyboard. I played a few woodwinds a decade. I don't recall anyone complaining about the "action".
Quite a few virtuoso guitarists can switch from a 24 3/4th" scale to a 25.5", some in the same show. Jimmy Page went back and forth between a double neck and a single neck guitar in the same shows.
Most of us spend a good amount of time driving. I'll bet very few swapped out their driver's seats because they were too narrow, fat, stiff or soft. Most things in life we are okay with even if they are not ideal because they simply are a means to an end and they work. It seems to me that often some find that the precise comfort of the guitar is an end or at least one of the ends.
I know that we are fussy about guitars. We have hundreds of different types of picks, strings, pickups, amps, pedals, and so much more. There is a risk that the pursuit of perfection spoils the journey.
I don't want to be snide to the effetes, but here's some practical advice.
https://www.youtube.com/watch?v=E0x978oZa3Y&t=39s