I think it is more complicated than that @faktoid I think most people are just looking for a setup that gives them the capabilities and workflow that they need/desire. I think electronic instruments are very different than more traditional instruments in that they are more complex and less specific.
For example you don’t see as many drummers or guitarists with so many instruments, of course there are definitely gear heads, but nowhere as commonly as with synths I think.
I think that synth people tend to be more focussed on features, sound and technology, and it can become a bit of an obsession, sure, but often it is not until one has owned a synth or sequencer or drum machine for a while until it is apparent if it sounds right/fits in the set up/has some shortcomings that may require something else added etc.
Then look at how developments in the market can affect purchase decisions, in recent years the resurgence of modular, polymetric/polyrhythmic sequencing, resurgence of now affordable old technologies like FM and analogue, portable gear, user configurable gear and so on - the creative person will always be curious, and that is partly why GAS exists.
And forums like this exist for users to share experiences, mostly.
Maybe don’t try to cure GAS, just try to manage it better, AFAIK there is no cure other than giving it all up, but aint nobody got no time for that