Okay, I run a Chandelure on my sand team and yes it is scarfed with shadow tag. i personally on ladder have seen my Chandelure fall a million times. This is because there are quite a few counters that people just don't think of in battle. The number one thing that can counter a a chandlure is any dragon Pokemon. personally i would say that about 40% of teams have at least one kind of dragon Pokemon on there team. that just being an estimate, i might be off by 30% either way. but anytime a Chandelure comes in to kill your Pokemon, you might lose them, but then your next Pokemon can be a dragon. set up dragon dance and then you basically set up your sweep for the match, with the right move set. I realize the main argument buzzing around is that ST Chandelure gets a free kill whenever it wants, but you can get a free sweep whenever you want by the use of it. it can actually be a downfall to your opponents team if countered correctly. the other thing that can counter it easily is Chansey. Chansey can completely wall anything Chandelure tries to do. again you might lose your Pokemon, but Chansey can come in and set up stealth rock, use thunder wave/toxic on the incoming Pokemon.
I'm just going to make a closing point. The annoying thing about Chandelure is that it pretty much gets one guaranteed kill in any battle. My Second and closing point is that isn't that true for more than just Chandelure? correct me if i'm wrong but aren't excadrill, kingdra, and garchomp are all of the same nature in there perspective weather? they can get a guaranteed kill or set up for a sweep. i'm sure the natural response to this would be that well then we should send them off to ubers too just like smogon. but seriously isnt that what makes our server unique. the fact that almost nothing is banned for being too hard to beat. in my opnion, i think that these tiers make for a much more exciting experience and would like very much for them to stay the same.