Lucha Libre IS contrived spots. They were doing it before Johnny No-Name got the idea from watching guys like Ultimo Dragon and deciding he could do it even coolerer.
It's not an excuse for it. It's just the way it is. It's why I don't watch Lucha Libre or Lucha Underground. While American wrestling and puroresu have a lot of similarities, lucha libre almost feels like an entirely different sport. The only real difference is when you've got some of the older guys in there who work a slower style or guys who have wrestled all sorts of styles like an Eddie, who I don't think people really consider a lucha libre guy.
It is what it is, and I know what it is, so I don't watch it. It's not like American Indy wrestling where I've seen it be great and complain because I know it can be better instead of constantly drilling in the same direction. It's more like Euro Indy wrestling where I know I don't like it because I can't stand chain wrestling, so I don't watch it.