My rule of thumb is that sidevolving is easier than improving or degrading.
If you became a dumb conservative, you are statistically more likely to have been a dumb liberal. The problem was with you in the first place and the value you came to represent in the society as a citizen of political sway.
Once you are a radicalized leftist you’re not going back to (neo) liberalism. You could downgrade to a social democrat, though. Its unlikely a politically active liberal is going to be so disenfranchised they become reactionary… And your explanation is exactly the reason why. If the political activity is coming from self-centeredness, then that person may resort to reactionary politics at some point.