If it's a legit shop with legit tattooists, who cares? It can bring in new customers and it's kind of fun.
Taylor Street in Chicago usually does Friday 13th, they're "$13 + $7 tip" and usually just line work, but they're fun. Nothing BAD. Same with Halloween, usually something. I've gotten a few and they're cool and done well. They also do "Traditional Tuesdays" were you can drop $50 and get a cool classic Rollo or Jerry (or other) designs. Name day, "Get what you get" ($50, gum ball machine with random flash, fun for everyone!)
I've also had larger work done there too so it's not like I'm a total cheap skate.
If all you want tattooed are large tattoo's in certain styles, yeah, not for you. If you love little jammers now and then, just make sure it's a good shop.
To me, it's a combo of just fun and a solid way to draw new people into your shop. So no harm, no fowl. I don't see it as something only "kitchen wizards" do or something to turn your nose up to. If a shop DOESN'T, good, that's their thing. Not for everyone. If you're a jaghole who calls every shop looking for a deal, screw off asshole. If it's not on their website, or FB, or Instagram, or whatever, don't go bugging hard working people with your shit.