The preamble of the thread indicates that the player's character knows about the festival, even if the player does not.
It does not remotely say that.
Somehow you read the words "As you, the reader of this posting, are obviously aware..." when what was written is literally "as most of you know." If anything, it is a fault of Mammal Tafren, the character, in being a (tiny) bit presumptive. Being raised an Intaki, of course he has the outlook that "most" people know about Kuhmbelaa. That just further leads to immersion because again, we run into this kind of anecdotal outlook all the time.
This is a imposition that only the owners of the universe can apply to us. They create the universe, and they set the bounds of what our characters know or can know through context, prime fiction, and other information.
This isn't your issue with it, its the vaporous construct you're hiding behind to justify your righteous indignation. If you really felt this way, there'd be about 500 more posts from you tearing down every last player-created idea put forward.
(voluntary removal of non-constructive words)
In this situation, the character implies that this is prime fiction information known to characters, and that if they do not, they are ignorant of basic common cultural practices in the universe.
The
character implies it.
So talk to the
character about it rather than creating yet another "ur doin it wrung" OOC post.
Also, again, nowhere does it even remotely imply that "if you don't know about Kuhmbelaa, you must be ignorant". I've heard of fishing for compliments, this is fishing for insults.
Is it any different from saying that you've punched someone in the face at the bar, or used nanobots to infect a CEO and take over his brain? In each circumstance, you surprise the player by imparting a new constriction to their character's universe, either by imparting injury or commanding their actions.
Yes, it is entirely and completely different. Equating someone saying "as most of you know, holiday x is coming up" with punching a person in the face takes an incredible leap of reasoning.
How is this holiday being celebrated "constricting" your RP at all? You have a real penchant for claiming injury without proving it. What activity was it you were intending to engage in that has now been denied you because of this?
If we could understand how this injures your RP experience in some more constructive way, it could actually get addressed. But as long as it stays in the form of False Equivalency and Slippery Slope fallacies, there is no solution at hand.