I cannot understand what is the purpose of creating a website quite similar to bitcoin.org, But I don't think it's a fishing or any other kind of scam. (I cannot 100% confirm it)
the motivation behind creating mirror websites is pretty straightforward.
per wikipedia:The purpose of mirrors is to reduce network traffic, improve access speed, ensure availability of the original site for technical or political reasons, or provide a real-time backup of the original site.
if bitcoin.org goes down, the mirror site will still work. this mechanism is really important with torrent trackers and similarly targeted web sites.
with crypto-related mirrors, there is usually an added danger that the site could be used for something nefarious, like phishing or malware distribution. even if it appears benign right now, keep that in mind.