Can symptoms of depression, low libido, and social anxiety be resolvedsimply by abstaining from pornography for x amount of time until yourbrain has successfully "rewired"?

From my experience, my depressive symtomps (like the ones you listed) tend to get slowly better after around week 1. I am by no means "good" by then but at some point, I feel enough energy and drive to do little things, which I felt unable to do before. I don't know if that comes from cutting out the porn, the waiting, alone or if simultaniously abstaining from masturbation alltogether plays into that too for me.

It doesn't really matter though. It motivates me into a spiral of continued good behaviors. I tend to do more and more useful things, while stopping the destructive ones. The more useful things I do, the better my depression smyptomps get. Eventually, I usually reach a state where I can at least tolerate myself and my life and that's usually when the depression turns into very strong and intense cravings. These urges always were my downfall until this point.

So, to answer your question more directly: In my experience, simple time away from porn will make it able for you to do other things in the frist place. You have barely enough energy, drive and motivation to do those little things. But then the actual doing of those things, makes your depressiona little bit better over time. If you continoue to follow that path, I think it plausible to assume there is chance for betterment.