Sweet with salty is hardly an anomaly in the culinary world. Salted caramel anyone? Ham glazed with honey anyone? Basalmic glaze over tomatoes anyone?
I’ve never understood why people get so worked up over this combo. It’s totally rational and, for many, subjectively delicious (which is, like you say, all that matters).
No one freaks out when people order food with cilantro even though it literally tastes like soap to some people. They just say “cilantro is not for me, tastes like soap” and get back to their burger or whatever.