BreOl72: Depends on your personal definition of "meaningless".
To me, the wishlist is meaningless, if a game can have 0 votes on the wishlist and get released
(or not), while another game can have 56.000 votes on the wishlist, and get released
(or not).
And as already mentioned: it's even worthless as an indicator for which games "we" would like to see released here.
GOG could as well simply ask: "hey guys, which games would you like to see released here?"
Because "our" collective answer to that question would be: "yes!"
So you mean one certain meaning and not any meaning, ok.
Just because you don't see GOG employees trying to get the publishers to release here, it does not mean it does not happen. There is no direct visible effect of the wishlist, that much is true. We know however, that they look into it (and if only to mark a wish as fullfilled). And one could assume that if they look into it, they are also trying to get things done.
But well, feel free not to use the wishlist, no one forces you to.
btw, I don't think a wish list entry with zero votes is possible.