When searching “Roblox Developer Hub” on Google, no results appear linking to the hub. If one searches for “Roblox Developer Hub site:developer.roblox.com”, only 59 results appear (far fewer pages than exist on the hub).
This occurs every time, on multiple devices (including a mobile phone), on multiple browsers, but does not replicate in Bing.
This could potentially be linked to the issues brought up in this post concerning the search functions within the hub itself.
Edit: As far as I can tell, this issue has been resolved.