I'm thinking he was saying that if money was no issue, you can always get what you want. Getting them installed shouldn't take some mystical unknown secrets though, anyone with a brain can do it, but once you start messing with the amount of lift (stage 1 cams don't increase the amount of the lift, I'm not sure about the stage 2 and beyond) you can run into issues that the average garage mechanic might not know about before hand. I think that was his point.
For those of use with less than several thousand laying around to dump into an aging slow dinosaur of a bike, the options are very limited as far as power goes. A set of stage one cams will work, but still won't be much of a return for what you might pay. Since none of the top end parts are available off the shelf anymore, custom work or second hand is the only way to go. That will cost more than most are willing to spend. Understandably so.