Budget is not an issue. I have an unlimited budget when it come to gear which is why I have several different machines. That doesn't mean I just throw money away and don't try to get the best deals available when I do buy new gear. I have a 16" MBP M1 and other expensive desktop Macs/displays as I'm a business owner in the tech space. This M1 Air setup is specifically for my office work and I wanted the Air for portability to keep up with work and editing while I travel. Every ounce counts when traveling with bags of camera gear, big white lenses, drones, water housings, etc. When flying to places like places like Africa or on small aircrafts you are very limited with weight, so you micro manage every ounce. Sometimes I have to bring my iPad M1 and connect it to my card readers and SSD's for backup instead of the my other M1 Air because I need those extra few ounces.
So not everyone here buys apple products by stretching every penny in their budget, sometimes it's something specific someone needs. It's not a complete waste of time, in fact I've been using a triple monitor office setup for 10 years and it's very efficient. I could not run my business without them. Maybe you should try it and learn to make money with all that screen real estate instead of mowing lawns?