>>43207299first does not mean good. Gen one is full of shit mechanics, and objectively has less content than most future games. That doesn't mean its bad, we should be glad when pokemon games improve on the original.
Also, just because you believe the kanto gym leaders are the most iconic doesn't mean everyone does. It's just based on personal experience. For example, I didn't really watch the anime until later gens, so I didn't give two flying fucks about brock, misty, or the rest for a while.