It's the corona of beers: simple and easy to drink even if you hate the bitterness from coffee.
If you already enjoy proper espressos, French press and the likes, then it's clearly not for you.
Coffee is for caffeine to get work done, to me an iced latte or ice coffee from Starbucks tastes just fine compared some $10 latte at some over hyped coffee shop.
Corona and lime is good also not sure why people hate on it. No one cares how cool the craft beer drinkers think they are.
There are those who care about the quality, craftsmanship and taste, since they can enjoy it, and then those who just see those as a good way to get something specific (booze, calories, umami, etc.)
To be totally honest, the ones who care are the people who, whether people like it or not, want the product to be at its best form and shape.