Yep! The way they tried to get around this was by allowing you to only play with people using the same type of controller, but you can mod your keyboard to look like a controller and get in regardless. It is a HUGE advantage for those game modes. I played pretty competitive Halo 3 for several years, including a couple tournaments, and on a controller I get completely steamrolled by a decent player with an M&K. There are other games with other examples but the ability to point and click vs using your thumb to make similar micro-movements on a thumbstick is just night and day. Apex Legends had similar issues where particular movements aren't even possible on a keyboard! If you have to register with a controller I think that could solve a lot of these issues for gamers.

I do understand what you're saying about madcatz though, and appreciate that controllers are expensive. What I'd really like is to introduce this limit to official controllers and then slowly allow third-party companies to offer official alternatives. Or, even better, only have this restriction for online gaming. I don't care what people do offline!