> The problem is that that doesn't actually mean "chiropractors are useless"
That's true. A blind pig does find an acorn from time to time. :)
Look, you found a chiro that basically did physiotherapy for you for a problem you were experiencing. Great! I'm glad it worked out!
But that doesn't change the fact that the profession at large is 1) founded on a fundamentally pseudo-scientific basis that has no grounding in reality, 2) is absolutely riddled with charlatans who claim to cure basically every human ailment, and 3) the professional associations actively defend those who make these claims rather than insisting on rigorous, evidence based, ethical standards of care.
If chiropractors want to be taken seriously, it's pretty easy: expose your treatments to the rigors of the scientific method, only support those treatments that have demonstrable benefits, and take away the licenses from the fraudsters who prey on those who are desperately suffering and looking for a way out.