For anyone seriously interested in how to get a great finishing with sanding here’s the guide I follow:
https://www.blacktailstudio.com/blog/how-to-sand-wood-proper...
I use a planer a lot but I'm still struggling with making multiple passes down a wide piece of wood. I often end up with grooves. I've gotten better over time but I'm still not happy with the results.
Otherwise you could try and get access to a CNC or a large industrial belt sander
https://www.zainrizvi.io/blog/why-software-engineers-like-wo...
A better way would be to compare the size of Stack Exchange boards at https://stackexchange.com/sites . It's not perfect but it's as good as it can get. Stack Overflow has 26 million users. Woodworking has 17 thousand. A fraction.
Further still, not every woodworker will use a belt sander. It's used for a specific purpose (large flat surfaces) and it's not a beginner's tool. So the fraction gets smaller. I'd say the assumption stands.
If you have better data that shows an overlap between those in the technical field and those that do woodworking with highly specialized tools, I'm all ears; I'm willing to be convinced otherwise.
In the meantime, here's another anecdote for you - I do woodworking (and gardening and constructions) and I don't own a belt sander.
But the tech market is centered in cities where owing a garage with tools in your 20s isn't possible.