I think the problem with cricket, actually, is that people too often take stats out of their context to argue abstract points. Watching Holder bat makes it clear he's not a 'plodder'. He's got a lot of talent with the bat, times the ball well, is solid in defence, and plays good shots.
If you take out his first couple of years, where he was a 23 year old kid and made captain because everything was falling to shit, he averages a very healthy 37 (higher, for example, than Ben Stokes).
There was a lot that went in Holder's favour, of course, (and likewise caveats that need to be raised in regards to his average) but you have to give him credit where credit is due. He's just a pretty good player these days.