I haven't seen much "absolute rejection". More so what I have seen is people who think this has been misrepresented as better than it is.
They are entitled, indeed in my opinion, right to say that.
Consider the 1832 Representation of the People Act (the "Great Reform act"). This fixed some of the very worst things about British parliamentary elections in the 19th century. It was heralded by its supporters as a triumph for democracy. But it was by no means a complete solution to every problem at that time. For example the franchise was still withheld from most of the poor and all women, and in the absence of even today's poor excuse for a secret ballot many voters were bribed or intimidated.
So, I think that any person who said at the time "This so-called Great Reform act is not so very great after all" would be quite right, and it would be mistaken to say that they were engaged in "rejection" of the act, they're just pointing out that it doesn't go nearly far enough.