They didn’t ban me, but I got a lot of ignorant condescension. I make it a point only to voice my objectivism when someone is *contemplating* or *advocating* a ridiculous purchase (usually wire, but often amps). I leave the sunk costs alone.I was banned by Paul Yoo's unofficial Harbeth Facebook group for arguing for science and proper engineering, and for posting links to measurements of the exotic snakeoil electronics favoured there.
One person responded to my $10k challenge by saying he would, but flying would damage his ears.
I think I did post Primaluna measurements once.