Canoe Competition Can More Techical Canoe/kayak Be Allowed Into Competition Event Anywhere?

Can more techical canoe/kayak be allowed into competition event anywhere? - canoe competition

I think the canoe and kayak classic case, where the competition a little too conservative

The canoe is is / are more technical than any kayak (I mean those that can break the international standard documents) in the case of competition allowed (where I live, local sports body must provide proof)