A: Acme XYZ is a scam because of ____, ____, and ____.This is a red herring because it is not trying to defeat the premise nor proving the counter-premise. It's a derail attempt.
B: Why are you bugging Acme XYZ? Go after bigger scams like Social Security, Federal Reserve, etc. etc.!
Derailing a thread is commonly defined as forcing the discussion to go off topic, usually in a way so the discussion cannot continue. In this case, the "defender" is trying to derail the topic onto discussion of the entire economic system, such as the reserve bank system (Federal Reserve is the American version. Europe would be the "European Central Bank" and other countries have their own.)
We have previously discussed why Social Security is not a Ponzi scheme so we will not discuss it again here.