Thread:Aicilespear/@comment-4383275-20160714204620/@comment-26347196-20160714225655

While it doesn't state explicitly, the thread has an extension of what he would mean by that tweet. Toby implied that he wanted Undertale to have absolutely nothing to do with Earthbound, thus nullifying the possibility that Sans and Ness has a connection. Some people even say that it was Toby's passive progressive "no" to the theory (lol). That explanation of the tweet was, suprisingly to me, widely accepted and acknowledge from the majority of the fans, even MatPat himself.

So, the theory was debunked.