Unfortunately when I was growing up all the adults around me always put on classic rock radio, and songs like Iron Man and War Pigs seemed to be among the only 10 songs these stations ever played, so in that sense I definitely find it to be overrated. I havent listened to radio music in many years, but back in the 90s the rock stations would endlessly play the handful of Sabbath songs to death. My dad also dragged me to lots of biker events like pig roasts, bike runs, hill climbs, etc, and these songs were played so constantly that I eventually got really annoyed with hearing them. I have previously expressed my reluctance to listen to Black Sabbath because of this. If not overrated, id definitely say at the very least that Iron Man (and other select Ozzy-era Sabbath songs) are overhyped in redneck america. Dio-era Sabbath is free from this stigma for me, and ive really warmed up to it lately.