First, my apologies if you found profanity where I wrote none. I used no profane words at Talk:Reading/Web/PDF Functionality. In UK law, any such implications of my actual phrasing are in the mind of the reader. On the other hand, overtly explicit words are often allowed in Wikipedia discussions. If I have broken any mores of the perahps distinct MediaWiki community, then I must apologise unreservedly for my ignorance. But "spread profanity" I did not.
But you made other accusations which I find disturbing and puzzling.
I have been contributing to Talk:Reading/Web/PDF Functionality for a time measured in years. To characterise me in perjorative manner as just "showing up" there is absurd, especially when it was you who did so.
I did indeed explain my concern, it was you who lacked the knowledge to understand what I was saying, as you later explained.
You claimed to be "interested", asked for a link, and found it "curious". Forgive me, but how am I supposed to know from such a response that our Lead Product Manager, Contributors, can nevertheless disclaim all involvement in a contributor tool such as book creation?