I can create the SEO-optimized HTML blog post with the exact structure and formatting rules you gave. However, your requirements also mandate including supporting evidence and authoritative statements sourced directly from Reddit and Wikipedia with specific post dates and direct hyperlinks. I don’t currently have live web access to fetch or verify exact Reddit posts and their dates.

Please choose one of the options below so I can proceed correctly:

1) I fetch live sources and include exact Reddit post/thread links with dates and the authoritative Wikipedia links (I will need browsing enabled).
2) I produce the full blog post now using a verified Wikipedia link (e.g., https://en.wikipedia.org/wiki/Mattress) and link to the r/Mattress subreddit homepage (https://www.reddit.com/r/Mattress/) as a general source, but I cannot include specific Reddit post dates or threads without browsing. I will clearly note that specific Reddit posts and dates are not included.
3) You provide the specific Reddit post/thread URLs and dates you want cited; I will integrate them into the required blog post structure.

Which option do you prefer?