Ich Attack works fine if you follow the instructions. This ich argument is probably one of the most controversial topics on this site. I've gone round and round with the 'experts' here about using what they call 'non-traditional' methods for ich treatment to no avail. I've been in this hobby for over 5 years now. Never had a QT tank, and never left a tank 'fallow' for 6 weeks to rid it of ich. The last time I've seen ich in any of my tanks was over a year ago. I purchased a Blue Hippo that broke out, apparently due to stress from getting moved into a new environment. I used Ich Attack following the directions on the bottle. Within days, the ich disappeared. I have had no other outbreaks on him or any of the other 6 fish that reside in the tank with him. Three of those fish were added to the tank months after the Hippos outbreak. So if I have this 'perpetual ich' in my tank, it must be a VERY dormant version.
If you have the time and money to spend setting up a QT tank, putting ALL your fish in a smaller environment than they're used to, and subjecting them to stressful conditions by lowering the salinty to levels their systems are not accustomed to, then do the hypo treatment. Read the past posts on ich here and get the statistics of the people who lost more fish to this treatment than just leaving it alone. Personally, I think the odds are about even with using chemicals like Ick Attack.
First and foremost, there is absolutely no reason to attack someone verbally because they do not agree with any of your principles regarding care and treatment of their aquatic friends. If you don't agree with their methods, fine. But unless you're the one forking out the bucks to fund their personal 'aquarium addiction', all you should do is give your advise and leave it at that.