Joseph, from what I understand (from my Rav who is a talmid of Rav Elyashiv as well as from other sources), the Indian sheitel psak has been quietly withdrawn, based on the Shach that says a double Rov is batel by issurei hana’ah (Rov Indian hair is not from Tirupati, and rov hair is not from India, even if it is 100% avodah zarah, which is debatable). As for the Gedolim who still signed on, I do not know. I am not their talmid, I do not have a kesher with them, and I can only follow my own rabbeim, who don’t endorse concerts but don’t feel they should be banned, as the blowback from last year’s kol koreh confirmed. You clearly believe a concert is worse than ham radio. Unless I’m mistaken, the metzius of ham radio is that you announce your call sign and see who responds. Being that ham radio is not a popular Jewish hobby, chances are you’ll be talking to goyim instead of yidden. Svara pshuta tells me that ham radio is worse than concerts. Have you ever asked a gadol about it? Depending on who you asked, they might tell you that it’s not the best hobby but as long as you’re careful they won’t assur it, as it’s something you personally need. Same thing with concerts.
YW Moderator-42, does that mean you’re (subtly) taking a stand on this issue?