This "dispute manufacturing" technique probably predates Robeson
by centuries... :-)
Anyway, it is an old, old technique of computer-modem comms and
was seen on ARPANET back before the first BBSs existed.
It's a way of bluff by the "manufacturer" to get around actually
replying to some challenge made by others. That's usually
accompanied by the manufacturer's veiled or outright personal
insults levelled against the challenger. Robeson uses the latter
more than the former.