There are a lot of designers out there, and that's a good thing. Design software and the machines powerful enough to run it are available to pretty well anyone these days for very little cost, and 3D printers have revolutionized limited production and rapid prototyping, and sites like Kickstarter, Gofundme and Indigogo have made it possible for people to get the startup capitol they need to launch their revolutionary new product to turn the world on it's ear. But, those aren't the only changes you need to know about.
What kind of people would write collect and review multitools? Quite simple really- we are designers and do-ers, outdoors types and indoor types, mechanics, doctors, problem solvers and problem makers. As such, we have, as a world spanning community, put every type, size and version of multitool, multifunction knife, pocket knife and all related products to every test we could manage in as many places and environments as there are.