I am curious, have people here asked parents why they chose spoken language for their child? *etc*
I think basically you should grasp the concept behind it.. No offense, but I have been observing now that people keep questioning things that are of the impossible to have a solid answer for. They can only offer "major consensus" advice, not experimental program "alpha testing and benefits observed while in progress".
Some deafs perhaps never care for a speaking ability. If they are born profoundly deaf, preferred to seek a profound deaf life, what are you to say to influence them to speak?
Everyone learns the written language after an initial phase of their lives, writing becomes an important tool of a deaf person. I think no one will disagree that writing proficiency is important.
What seems to be the encouragement is for
a child born deaf at birth, by deaf I am referring to requiring a HA of some sort to hear general conversation; that they take some form of signed language
because they can coincidentally miss out on a lot if they do not hear it.
This is where the L1 (sign) language facilitates a L2 language for them to become eventually proficient in that form.
But speaking (and the creative grammar/ language complexity/ cognitive thinking) seems to be a complete optional category
only if the family WANTS their children to be proficient in this.
There's no point to advocating Speech for someone else just because you think so; perhaps they did not want to be proficient in speech...?
I surely hope you do read some of what is written not just in this post, but in the rest of the topic, and please read it thoroughly.. there are lots of viewpoints and suggestions made, but there are no YES and NO answers.
Perhaps you will have your own answers reflective of Miss Kat when she grows older.. but you can only make her choices for her, little will you be aware of what she actually wants when she is in her teens.