I think if you find weaning yourself off to be do-able, then why not?
The longer you stay away (say 4 days, a week, 2 weeks) the more you may, when you do look at it, find that you see it differently.
Doing this kind of thing, and this may not be true for you, looking at fb for example, can be a way of reinforcing what we already know. You know he's a bad person, lacking morals and integrity, a manipulator etc, but when you see things like the 'son' thing, it reinforces that for you and you can relax for a bit, knowing that you know what you know.
So reinforcing that yourself, by dragging out your list and adding to it or just reading it will help with that.
Eventually, at least with pauses inbetween, you may find yourself, if not laughing at what he posts, at least finding it pretty boring.