Murray Perahia and Mitsuko Uchida have FABULOUS technique. Their playing is at the highest level.
Ditto that.
Actually the bar is not so much being "raised" as it is being shifted. There is certainly an emphasis on right notes these days, as there is an emphasis on adherence to the score, which explains the stellar careers of Kissin, Andnes, Schiff, Perahia, Uchida, Pollini, Yundi Li...
Of course, there is NOTHING WRONG with hitting the right notes, I hope that we can all agree on that!
The problem is that there is really not much being "said" at the piano these days by the leading virtuosi, not much interesting or original, save for the exception of a few, among them Volodos, Lang Lang (for better or worse), and a couple others. Playing these days generally lacks the charm, color, "magic", the darkness and depth of the old masters. Where is the sense of risk anymore? Yes, everything is played pretty safely and cleanly these days - performances are "manicured" - yes, that's the word...
They had Horowitz - we have Volodos. They had Cziffra - we have Hamelin. They had Hofmann, we have Kissin.
They win. We lose. That is true.
Still, there is something awe-inspiring about the craft of a pianist like Kissin, or the balance and proportion of Perahia, the evenness and control of Hamelin. Mechanical craft seems to have taken the upper-hand lately. Things are still evolving though, and my guess is that before too long there will be a harkening back to the style of old.