The survey is biased and slanted to favor DynaQ. A lot of people that took the survey did not distinguish between DynaQ and the new champ select. The surveys was a largescale survey that only happened once.
Riot has the power to survey all the players. Even if they made up some statistic, people would still think it true, because of it.
We, as players, can't create a ingame survey.
So we survey people on Reddit, Boards, etc. and they all have the majority disliking DynaQ. Not only that, even LCS players hate it. Riot helped to create a "mini survey" for the entire playerbase with the DynaQ roundtable video, and yeah, the like: dislike ratio is pretty dang big.