yes, all you whiners leave so we can have your share of the pie
First of all, if the whiners leave, you won't have their share of the pie. You are going to be getting a bigger piece from a pie that will proportionally take more time to be baked, so your net gain over time is the same, haven't you figured that out yet? Unless you are referring to the single block that gets mined right after they leave, in which case I believe that anyone wanting to leave, would do so right after a block is mined.
Secondly, the "if you don't like it, get out/if you don't like it there are other alternatives" argument is plain stupid and invalid. The whole purpose of a discussion forum is for people to express their opinion on how something could be improved. You may disagree, so please feel free to express your reason for disagreeing. But nothing is built perfect, so arguments like "no-one forces you to use it" do not invalidate the original argument.
Isn't obvious that the individual chooses for various other reasons to use a service, but still thinks that there are ways for it to be improved? Otherwise, his post would be like "Please suggest me some alternative cause I think this one is crappy"
tl;dr People using the "if you don't like it, you can get out" argument are in a fanboy mental state. Needless to say that rarely are they not plain wrong, because they believe they use a perfect system, which is never the case.