I can see that, but I think it should be pretty clear that the one disparaging progressives is the one saying things will not change, even though the mission of progressives is to change things.
My position is a more complicated one that requires some thinking about, but it is fully consistent with wishing for and fighting for an improved world.
Don’t you think it might just be a little reasonable to wish for, not a perfect, problem-free world, but one that is simply improved over the one we have? I think by setting our expectations a little more realistically, we can help avoid a lot of the harmful, negative emotions that have gotten so common, and that don’t really do much to help due to how de-motivating the sensation of hopelessness can be.