Conservatives have lost or are losing on:
- immigration / right to ethnic existence (civic nationalism has replaced ethnic nationalism / ethnic subsidiarity)
- national sovereignity (power of supranational entities had been steadily increasing since 1945)
- sexual issues (first homosexuality was decriminalized, now we are looking at a push to decriminalize pedophilia)
- self-defense issues (regulation of the right to own firearms etc.)
- speech regulation (everything that Right dislikes is legal, everything that Left dislikes is illegal)
- and probably a dozen other things I am forgetting
... The list of things you are wrong here is pretty long.
Self defense issues the right is winning. As for speech, no, it's legal for both sides to talk, despite attempts to limit from both sides.
As for civic nationalism, that is a right wing value in the US, unlike the stupidity that is European right wing.
I'd say that he was correct on the Leftist infiltration of the establishment, but he misidentified the main threat: it were not Soviets, but the homemade banksters, who were most active in promotion of Marxism.
And you are even wronger here. McCarthy was a drunk liar who started with stolen Valor, then continued by being the most useful idiot to the USSR ever. He had no idea who was or wasn't a communist, he just knew there were a bunch in the State Department, like everyone else did. The trouble was knowing who was who.
He dealt a huge blow to anticommunism and is absolute scum.