Can be true but like all things it depends. In the 6 years I've been into 3d printing I've observed that lots of people compulsively mod their machines. I just print stuff. Filament is cheap and I use free online software to do designs. The repair parts I've made have actually paid for the machine by being able to keep broken stuff instead of replacing them. But I'm cheap. I think people who are determined to spend money will find a hobby to spend it on.
As someone who learned subtractive machining (milling, turning etc) I find additive machining very interesting. My friend bought a cheap printer recently and I'm excited to try it out.
Never understood the obsessive tinkerers, all that work to have something worse than a Bambu P1S. To each their own ig, I just see my printer as a means to an end I don't want to mess with it. I want to mess with the stuff I build with it
TBH the 5 years I spent tinkering with my Ender 3 were a lot of fun. Overcoming the little problems and getting the settings right was always satisfying. But at some point enough was enough. My A1 is like a little robot wizard - I hand it a file, it conjures me an object and plays a little song when it's ready. I'm loving it!