Is there any evidence that IRC users are somehow more likely to accept self-signed SSL certificates? The IRC clients I'm familiar with rely on the OS trust stor

Is there any evidence that IRC users are somehow more likely to accept self-signed SSL certificates? The IRC clients I'm familiar with rely on the OS trust store, just like most web browsers do. To me this seems like saying a webmail site shouldn't use SSL because the recipient might also use a webmailer and happily accept a self-signed certificate and bypass the browser warning. Sure, it's no replacement for E2E crypto, but to me that's a clear case of perfect being the enemy of good.