Challenge rifts look like a disappointing flop, so much more could've been done

You get 0 xp, 8 bounty mats once a week, and no one competitive is going to play it. I watched rhykkers stream and I was just so underwhelmed by what challenge rifts are and have to offer. Seems like an attempt to keep people occupied not making actual progression on their characters by using other people's situations so to speak. This won't stop the people who leave after playing 2 weeks of the season from leaving. This won't appeal to competitive players in the greater rift leaderboards because you get 0 xp and barely any rewards. This is a total flop but go ahead and surprise me diablo subreddit and tell me how you think this will go down on release day. I'm curious to hear what our mix of casuals and semi competitive and competitive players have to say about it all