Why do seltzer brands have/keep bad/unpopular flavors in their variety packs?

I tried to find a thread discussing this, because this is something I have thought about for awhile, but I couldn’t find anything.

I do admit I am very specific about flavors and tastes (I eat 16 foods). However, in my experience, there are always at least 1, if not 2 flavors in every variety box of seltzers (really every alc can brand), that no one likes. My most prominent example is the Truly lemonade case which I have found quite popular, but everyone wants the strawberry and lemon, and try to avoid the pineapple and watermelon flavors (except the people who actually genuinely not care which is a small percentage IN MY EXPERIENCE).

There are few theories with some backing that I can think of, but I’m wondering what other people think, or if they have had totally different experiences.

Again, this is only my experience, I am looking to see if others feel the same and if they have theories!