First, writing is a deliberate act. It follows, important facts are left out deliberately when not included. Accordingly, our best guess is probably wrong. Then, guessing is not a good response to an explicit omission. So, assumptions are misleading for personal security. Given, good netiquette to see the facts clearly. As a result, do not assume anything.
Assumptions Are Misleading
To start, logical inference are acceptable. But, when something does not quite fit there could be a trick. In any event, conflict with an inferred premise is a warning.
It follows, an assumption is an inference not supported by fact. It is easy to infer things based on past experiences, common knowledge, and general standards.
Next, many people post misleading information on purpose. Thus, information may be accurate. But, leads the reader to make what they consider obvious assumptions. So, reading comprehension is key. And so, measured by reading grade level.
Users create a positive online image. This leads people to make themselves look as good as possible. Reality is often different than cyberspace for heavy internet users.
Assumptions Are Misleading Netiquette
No guesses. Hence, logical agreement required for consumption of content. Given, positive online images may create misleading inferences.