Nah, what we are seeing is that they just leave the site, and the site becomes more radicalized overall.
Banning the_donald was the beginning of the end for Reddit, at least as far as balanced discourse went. At that time, the r/all was relatively balanced and you'd see major news stories from both POVs.
Now it's a hysterical echo chamber full of thinly veiled death threats towards the sitting president.