I dunno. I think these minor jerseys only justify their existence if they're won by someone other than the overall winner, and the format allows someone to go for glory who doesn't have a genuine shot at GC. The polka dots in particular encourage flamboyant, exciting racing - I always had mixed feelings about Voeckler but there's no doubt he was a popular rider.Personally though, I'm becoming somewhat disillusioned with the "King of the Mountains" competition that he won last year. The current points system seems to reward riders who charge off half cock (Thomas Voeckler style) putting on a show of bravado and racing to the top of the first few mountains in first place, only to fade away badly. They usually get overtaken by half of the peloton before the final climb or summit finish. Just hoover up all the early points on offer, then let the GC contenders fight it out for the remaining points at the end of the stage.
Also giving the lie to your assessment is the fact that Alaphilippe won two stages last year, one of which featured two 1st category climbs, the other three 1st cat and an HC. He was a thoroughly deserving winner of the spotty jumper.
Besides which, all the HC climbs above 2000m are given double points this year, which weights the competition towards the true climbing specialists, and against those who go points-harvesting on cat 3 & 4 climbs. Wellens currently leads the classification on 64 points, but over stages 18, 19 and 20, there are four HC climbs, worth a potential 160 points, so I don't think we'll be seeing him in the polka dots in Paris (though presumably one of the GC boys will take the win on Val Thorens, so more realistically 120 points for someone like Ciccone or Barguil to go for to make the title his - or maybe Bardet has been sandbagging so far, taking it easy in the knowledge that he could still win the polka dots with a flourish on the final three stages).