He's probably the team MVP to date, even though he's not an all-star. The Brewers don't have any position player all-stars so far. A couple of hot weeks from anyone at this point in the season can change their outlook significantly, of course. If Wild Bill has a strong June (I'm not holding my breath, as I suspect that broken finger has sapped him), he could get a spot due to his star power.
I like the All-Star Game. I think any nod to fans is a good move for any sports, so I'm glad some 10-year-old Brewer fan can vote a straight Brewer ticket, like I did as a kid. I also dispute the idea that fans "get it wrong". If a player has performed at such a level to be respected by fans to that degree, they've clearly done some good things in their career to gain such recognition. Obviously, Yelich is a great example.
I also loathe the movement to "get it right" in sports. I think the obsession with getting things right, and making sure every champion or all-star is worthy is suffocating. As fans, don't we like the debate? Don't we want there to be questions and controversy?