Yes, much hand waving.  Again, just because you can say it, does not make it so.  There is zero evidence that a cartel of any size less than 51% of the total network can delay fee paying transactions issued by others to any noticible extent.  With 51% of total hashrate, such a cartel could do so, but there are other consequences to that cartel for doing so, and even then it requires that the cartel keep it up.  If they ever stop, those delayed transactions complete nearly immediately.  It's apparent to many of us that you still don't really grok how the p2p protocol actually does what it does, so you have made up a theoretical flaw based upon what you believe happens.