I think it’s worth noting that Deep Blue took 30 years (of combined developer time) to build, ran on the most advanced computer gear available at the time (though many desktop computers can outperform it today and in 5 more years all new computers will), and the software was tweaked between games which, to me at least, is cheating. Also Kasparov may well not be the greatest chess player living, let alone of all time.
More to the point, computers only do excactly what they are programmed to do. So Kasparov wasn’t beaten by a computer but by a computer program that took years of mental gymnastics from three world class programmers.
It’s essentially the same as bringing all 23 volumes of the OED to a spelling contest. The only interesting part is that the dictionary was written; not that the combined, archived research of thousands can beat one human’s ability. Deep Blue is still just an artifact of the humans that made it.