Thanks for linking this! It was well written and interesting, and I'm glad to have discovered a new blog to read.

Suggestion for a summary of the link:

Some arguments are really signals targeting some in-group. Outsiders frequently miss the intended meaning. These arguments are simply nonsensical if taken literally ("Bashar Assad was a Mossad agent sent to kill Syrian children"). This may be because clearly stating the intended meaning is politically incorrect outside the ingroup, or it may just be a rhetorical device.

It's important to recognize such arguments, even if we are unsure what they are really intended mean. Consider such alternative explanations when people say what seems to be nonsense or clearly wrong.