It depends on the person — here's the honest, mixed evidence behind dairy's split reputation.
Dairy has a surprisingly split reputation — some sources list it among inflammatory foods to avoid, others point to research showing neutral or even favourable effects for most people. Both can be true, because the honest answer is "it depends on the person."
Population-level research on dairy and inflammatory markers is genuinely mixed, with some studies showing neutral or slightly favourable associations (particularly for fermented dairy like yogurt) rather than the uniformly inflammatory picture sometimes claimed online.
Lactose intolerance and, less commonly, a genuine dairy protein sensitivity are real and can produce real symptoms and inflammatory responses in the people who have them — but that's an individual reaction, not evidence that dairy is broadly inflammatory for everyone.
If dairy doesn't sit well with you, that's real and worth respecting — a personal elimination-and-reintroduction test (ideally with a dietitian) is more informative than a general claim either way. If dairy doesn't bother you, there's no strong general population evidence you need to cut it pre-emptively.