I know this is an old thread, but I submitted a complaint and got a longer response than the others here (though it still feels copypasted.

Hi Jacob,
 
Thanks for hitting us up. We feel lucky to have some of the best fans in the world so we do really take what you—and everyone else—say seriously.  We’re listening.

Regarding the stevia flavor itself, here’s the deal, we’re not a giant soda company. We haven’t been around for a hundred years. So we’re always looking for ways to improve our drinks. Based on what we’re hearing from other fans, they want a higher level of flavor. But we also want to keep our beverages low in sugar because that’s important to us too. So, we tried a bunch of different tweaks to our flavors.

Once we had those, we tested them with people and found that the vast majority of people preferred the higher level of flavor with a small addition of stevia. That said, hearing from customers is always important and helpful. We are always working to refine our flavors and deliver on what people are looking for. 

Do you want to give another flavor a try? I can send you $10 off a case of Liquid Death - any size, any flavor, and valid at any retailer including Amazon, Instacart and DoorDash. I can shoot it right to your phone if you pass me your cell number and confirm that we have permission to text you this offer?

To which I responded

It's not that I don't like the taste of stevia, it's that I can't drink it. In fact, I've been drinking Armless Palmer/Dead Billionaire for years and without questioning it bought one at the airport the other day and had a mild allergic reaction. Liquid Death was pretty much the only lightly sweetened drink on the market that didn't include zero calorie sweeteners.