actually it's not as complicated as that.
All the caregories were added by the eddies some years ago. which is why most are for machines and companies that no longer exist.

Us mods don't have the power to add or remove forum sections - so they remain hopelessly out of date.

mind you, if i could make a section for the ender 3 it'd probably be a locked topic that just said: Don't Buy This Printer !
lol :-)