I can't imagine why that would be intended to be humuoruos. The content of the post seems like a genuine attempt at trying to point out the potential flaws in purely text based communication via internet.

To expand on such, text doesn't carry any of the social cues that human beings learn during their development. There's no facial expressions, tone of voice, any form of body language such as posture or hand gestures. Communicating and being understood via text is very difficult, especially when one is attempting to be succinct. "Brevity is the soul of wit" does not only mean that one should strive to be brief but also that it takes great ability to accomplish such a feat aswell.

I agree with that statement. Even face to face, sometimes sarcasm is not presented well enough for others to catch.

*edit. Maybe that was sarcasm....

it doesn't have to be even on sarcasm level, sometimes i get misunderstanding on elementary level, ie when texting my fiancee, meaning somebody who is the closest person to me for years.

once you don't see face of the other person clearly, misunderstandings will happen, better learn how minimize them or you and people around you will suffer from unnecessary conflicts