I think a lot of people who get into hardware are reacting to the lack of inspiration felt staring at an empty DAW project. Hardware can feel more inspiring because it is engaging more of your senses, but still has its own “blank canvas” problems - you get a loop going, but where do you go from there? I don’t think this bit of friction makes people consciously think the answer is “more gear” - but the frustration can certainly leave one open to the influence of marketing.
Really, very few people can come up with a fully fleshed out, creative idea out of thin air. Most of us would do better by composing in a way where we are reacting creatively to something pre-defined - maybe a song structure, a sample, or even non-musical content.
Here’s a video from Analog Kitchen showing how you can get a composition going using familiar elements from popular songs.
GAS perpetuates because there is so much marketing content out there, and comparatively little content out there to teach us how creativity works. It’s so bad, that even in this thread, many responses call out GAS as a means to “hide” a “lack of creativity.” I don’t think there are too many people spending thousands on music gear because they “lack” creativity - they just don’t know how to best utilize their creative energy.