Does right have a "blacklist" of points they don't talk about?

It seems like whenever there is a point of great contention by the community, Riot chooses, or is forced to, remain silent on the issue entirely.

For instance, things like:

Lee Sin Balance Challenger Ahri Name (it should really be Dauntless) Sona Nerfs Cassiopeia Rework

All of these have huge threads on GD and many, many other threads about the player base of their game doesn't like or agree with the changes that they are/aren't making.

And yet Riot remains absolutely silent on all of these points, only some small points on the Cass rework by Stashu saying that we are wrong, that Cass is different but still strong, when she actually isn't.

So, in short, can any Rioter comment on how threads with huge traction like these remain void of Rioter responses? Even just a little comment like, "hey, we think its better this way. We understand your complaints, but X, Y and Z are making us favor this over what you want" Right now, its like Riot is like, "hush children, you know nothing about balance or what you want. Let daddy take care of you"