Anything that a computer has a chance of doing better I can't ever claim to be a "sport" or even "pro" at.
By that argument, nothing in the world is a sport, because some day (maybe a LOOONG time into the future, but still some day) we will probably have nano-engineered robots that can play every physical "sport" better than humans too.
Does that mean Soccer, Rugby or whatever sport ceases to be a sport? No. With the risk of a ban for saying this, his quoted opinion above is, quite frankly, retarded, because if you follow his logic, we might as well terminate the term "sport" because we can create something that would make it cease to exist.
Also, have chess stopped being played professionally because computers beat humans now (which they do. The worlds best chess program, Rybka, is almost virtually unbeatable even by the best grandmasters, and have bested grandmasters even while giving them handicaps)? No. It still lives. Instead, computers brought a lot to chess, without destroying human chess. Centaur Chess (Human and computer working together, using the humans strategical thinking with the computers tactical precision and calculating power), or simple computer-vs-computer tournaments are quite popular these days.
Xerseus is simply unable to discern between "humans" and "AI's" and think that the competition has to be between those two, when they can be kept seperate. Even if someone created an AI that could beat every human on the earth, human StarCraft would still be played professionally, because humans are humans, and as long as we are humans, we can use competition to test each others skills, regardless of whether or not a computer can do it better.