I agree with Cypress on the specific case of Riis. Actually I'd say pretty much any case of retroactive title-stripping. Anything after the race has ended is really too late; the moment is gone.
But in general terms, this strikes me as a take on the "level playing field" argument, which I don't buy.
The net effect is, I don't really give a crap about pro cycling results, past or future. Actually I would extend that to pretty much any pro sport; it's just the nature of these arrangements to do anything necessary to win.