Perhaps. Though the majority of people still hang out for the mountain stages and view them as the pinnacle of each tour.
They provide the most intrigue when it comes to the race and how it will pan out.
I'm not a big fan of riders who can't attack in the mountains and just sit on the wheel of others. A tactic of Cadel Evans strangely enough over the years preceding his win. A tactic I always found entirely dull and uninspiring.
I know what you mean, but is it a sign of a cleaner sport and something we just have to get more used to? I can't think of ANY explosive climbers that have never tested positive of some sort of banned substance. Not that is isn't exciting, mind...