Well...Trump, Levin and Malkin for instance are not jokes...the organizers should get demerits for the piss-poor decision you mention...and this is hardly a unique situation for this gathering, and why they invited #NeverTrump cry-baby Beck I don't know. Some of their snubs should earn applause, like Christie and Jeb Bush...but the Tea Party conservatives drove that...but then Pamela Geller stopped getting invites...and the dis-invite of Milo in 2017 was pretty stupid. There has been a love/hate thing with the organizers and the so-called Alt-Right.
As with most things now days, you have to treat this like any other seminar...go see the ones you want to see, skip the rest.