I came to ask the question why the mobile site has no "Page not Found" page, and I found it had been asked two years ago, and had no answers: Design “Page Not Found” page for Mobile
In attempting to be diligent, I followed bullet #1 in the answer for Getting attention for unanswered questions? which was
You can "bump" your thread by editing the question to provide status and progress updates resulting from your own continued efforts to answer the question yourself
My own effort to answer the question led me to the aforementioned two-year-old, unanswered question... so I posted my "status and progress updates", stating in my edits
UPDATE: This is still a valid question. Any status update? Is this page going to have a mobile version? <!-- Bumping per https://meta.stackexchange.com/questions/7046/how-do-i-get-attention-for-old-unanswered-questions -->
I realize that is a puny edit, but was just trying to bump in accordance with that answer ... but it was declined.
Why? Was this the wrong approach? What would be the correct way?