Again with the irony.
I don't like when people Attack others without justification
when there insulting tone is so rooted in misunderstanding.
The original post was Is there an app or any software that will allow me to use an iPad or iPad Pro as my ebook and write freehand using the Apple Pencil?.
It was a question about the pencil!
Along the way it got hijacked into a discussion(?) about reasonableness.
Simply because a product may have abilities beyond what is possible upon purchase, does not mean each and every one of those abilities should be provided by the vendor at purchase time.
The sentiment has been you are "unreasonable" to expect an advanced feature, likely addressed by the 3rd party space, to be provided at purchase by the vendor.
It's not unreasonable to want something in general.

In fact you made this statement earlier alluding to the concept of "a complete dictionary" Perhaps if you had defined complete. I would not suggest "complete" for a broadly sold consumer product like an iPad should include a legal or medical dictionary.
Now if there was an "iPad Medical" or iPad Legal" model for sale, lacking these dictionaries upon purchase, I would heartily agree with you.
You go on to bemoan other "seemingly simple features" that are missing.
Is there a Android Tablet out there preconfigured for every need of the medical or legal field? For accountants? Real Estate professionals?
And since it appears you are a lawyer, what with your line of work's penchant for accuracy... nobody called anybody STUPID.