So in a split where the entire bot lane meta got warped effectively changing the entire professional landscape, the talk of champion diversity literally gets complained about. It's almost as if the entire split wasn't even acknowledged or a small sample size of games is being used to make the post at hand. I advise you to look beyond JUST the LCS because this split had more diversity and unpredictability than you can imagine!
Even still: had the outcry for such a marksman dilemma not been assessed and something about Zoe...again, pro players would have found means to play around and with it and with their rosters just fine. They don't play for you and shouldn't have to. If that's a problem, power up your PC, improve your play, talk over your coaching staff, and get out there and "diversify the meta" yourself.