Isn't this like saying we should abandon professional road cycling as a sport, because motorcycles have been invented and exist and are a faster method of two wheeled transportation?
Or we should abandon rowing as a sport because we now have 9hp Honda outboard motors?
Well, cycling is plagued with lots of similar problems (doping, people hiding electric motors in their bikes etc.), so yeah, I would argue the same there. On the other hand the very act of cycling improves health, so it's much more suitable as a sport for humans. Chess may have some arguable benefits, but it's very hard to detect so.
Of course, everything depends on "the market" - if people want to watch human chess tournaments (or cycling tournaments), they will... but I suspect with time it will either have to become a hilarious, anti-cheat porn or it will die out. I'm rooting for the latter :-D. I'm sure we can invent much better competitive games that are not that prone to these problems.
> I'm sure we can invent much better competitive games that are not that prone to these problems.
I rather doubt that. Go was thought to be much harder to solve, but AI has caught up there, and with techniques that will probably generalise to any similar games.
Well, if you want to replace Chess you'll need something that scratches the same itch, which will probably involve some level of similarity. It's hard to even define the terms of a question like "is cycling better than chess?" - maybe, but even if you have a compelling argument for why, you're unlikely to convince people to switch from one to another.
Or we should abandon rowing as a sport because we now have 9hp Honda outboard motors?