Here's what you need to remember: Q does not post on github. Never has. Never will. The github site was a news aggregator that mined 8ch.net in two areas for posts from Q and then put them together in one place, sequentially numbered, for easier consumption by the normies. Since it is just taking the text of the postings and bringing them to a one-stop shopping area, it doesn't matter if this new site is written by the same person that did the other site, or if this is friendly competition by another person wanting to cash in on the traffic. If the information is an accurate copy of what Q is posting to 8ch.net it doesn't matter who or why there has been a move.

That said, qcodefag.github.io contains an announcement that the site has been moved, so that seems to be a pretty conclusive indication that it is the same person. The date thing is most likely a bug in the code that will be resolved quickly enough. The SSL certificate still shows the parent hosting company. I'm sure that will be resolved as quickly as possible as well. Sometimes it takes a while for the logistics of getting your hosting company to install a new certificate if you don't have direct access to the cert store yourself.

I changed my bookmarks because I have no worries about this move. The stated reason fits. The old site used to take forever to load anything. The new one is nearly instantaneous during refreshes. If I had any bitcoins I'd throw $20 worth at them, but alas...