Game 1 was the third-highest rated game 1 on ABC. IMO, it's just a small (but vocal) subset of fans who hate the league, the Warriors and Durant. The league has usually had one or two dominant teams (except the 1970s, a period of time in which the league almost folded). The Celtics winning nearly every title in the '60s, the Lakers and Celtics splitting up nearly every title in '80s, the Bulls winning most of the titles in the '90s (and probably 8 of them if Jordan hadn't retired the first time, maybe 9 if he hadn't retired the second time).
In all those eras, there were one or two dominant teams, a bunch of decent teams with little hope and a bunch of totally crap teams (except in the '60s, when there weren't enough teams in the league for a "bunch" of anything). Personally, I don't think the Warriors' (and Cavaliers') dominance will bring down the league. History suggests that most fans enjoy dominance.