Unless you have seen and can produce documentation issued directly from Akrapovic warning of backlash measures, this statement cannot be considered factual. Who do you believe benefits most from price fixing measures? Who dispersed the information to which you are referring? If the answer for both questions lead to the same source, proceed with caution.
Based on multiple retailer statements, Akrapovic is lagging behind on supply, which can be validated by the lengthy turnaround times that have been quoted for even modest group buy attempts due to low inventory. Considering the low number of inventory in the field, if Akrapovic was truly concerned that their units are selling for too low of a price, they would simply raise the prices issued to retailers instead of leaving money on the table. There's no point in hacking off major retailers when the alternate solution offers the same result while returning increased manufacturer revenue.