The title isn't misleading at all. If, being of Indian origin, you've ever liked Tzatziki; that's probably because your tastebuds are so very attuned to the dahi concoctions with various members of the Cucurbitaceae family. I've yet to find a fellow-Indian who said they didnt like Tzatziki. At the middle- eastern places that I eat at , my favorite game is to guess if their Tzatziki leans more towards tasting like our kheera-ka-raita; or lauki-ka-raita!
A raita basically refers to savory, spiced yogurt (dahi) in our culture. And if you add any fruit/vegetable to it, it becomes a raita. A must at almost any meal, dahi becomes a raita at special occasions or for guests; sometimes even if we want a change of taste from plain old dahi. Unlike here in the US, sweetened yogurt is not on menu on an everyday basis. I got dahi-cheeni (yogurt with sugar) as a kid only if I'd been exceptionally good some day. Or one spoonful when heading out for exams or interviews (sweetened yogurt is considered auspicious in most parts of Northern India, and believed to bring good luck). Fruit-flavored yogurt was pretty much non-existent during my time in India, and till today, I haven't developed much of a liking for it.