Call me old (because I am) but as a fan, actually watching the game, I do not want to have to be studying obscure metrics to feel like I need them to appreciate or be entertained by what I’m seeing. RBI is (yes a flawed) measure of a player doing the basic thing needed for a team to score runs. I derive pleasure and entertainment from a baseball team executing basics to accumulate runs to hopefully win a game. With my eyes, over the course of many, many seasons, I watched players that can consistently get it done, and others who can’t. So, yeah, RBI matters a lot to me. YMMV