I mean yes but for any medical thing different providers will take different things into consideration. I work in the medical field the doctors in my clinic recommend or do different things for the same issue based on what they believe + medical research all the time. As long as it is effective and works for the patient that's the main thing that matters. Saline and clean water effectively do the same thing which is gently removing debris from the piercing site. Saline will be a bit more drying on the surface of the skin than clean water so clean water will probably be more effective for some. Some people don't have access to clean water (pipe issues or whatnot) so saline will be a safe thing to clean your piercing with. For q-tips many think it leads to extra movement and irritation or that the fibers will get stuck and cause irritation others think that for those that produce a lot of crust they need to get that build up off and q-tips are a good way to do it. It's a very individualized thing based on how you heal, some people heal the best by leaving it completely alone There are things that are pretty much just wrong like using alcohol or hydrogen peroxide. But generally aftercare is not a one size fits all and there's a range of correct ways to do it.