It's actually a joke. But it does make you realize that we don't have artificially flavored eggplant foodstuff. What would this taste like? What does an artificial eggplant taste like?!
There appears to be a reason behind the joke besides marketing, even though marketing is probably the main reason. The eggplant-flavored condoms, inspired by the inappropriately used eggplant emoji, are pretty hilarious, are Durex's attempt to talk about how we talk about safe sex. "Durex knows there is no place for an aubergine when it comes to safe sex," a spokesperson told the Mirror. "It's just as questionable, in fact, as a decision not to introduce a Safe Sex Emoji to empower young people to talk about sex, safely, in a language they are comfortable with."
It's not a bad point, even if there is a little self-interest at play. Safe sex is an important topic and emojis are a language used by millions. Why not make sure that the language is equipped to talk about important issues?