Ah yes, more “don’t bother voting” propaganda.
the heart of the issue seems to be the legitimacy that voting gives to a system -- participate if you chose do, just do so w the awareness of the fact your participation was more beneficial to the status quo than it was to you.
and, yes, you do need to do more than just vote; but if you lack an understanding of why your increased participate is now necessary you'll be treading water at best -- like the democrats.
there have been people who've been in this situation before and wrote down what they did with the benefit hindsight included -- if you look at their stuff you'll find out what you need to do beyond voting.