i think if it's not obvious why it was groundbreaking, some explanation would be polite
IMO, Cowboy was the first good mix of Rap, Country & Rock combined. I'm honestly not a big fan of Rap or Country but I think Kid Rock did a good job of combining everything. He threw the concept of 'genre' out the window. And it's hard to argue that it went over big. I think it helped break down some of the walls of Country music.
As far as Van Halen's Eruption, I know it's not your thing pwal but Eruption was a complete game changer for guitar. To quote Frank Zappa, "Eddy Van Halen reinvented the guitar". Not to mention, David Lee Roth reinvented buttless chaps 😘