I think the main point is, for me at least
GSP doesnt have to move up, why should he? He never has expressed interest in it, its up to the UFC to give him challenges in his weight class
And1 has moved up, twice, him wanted to call out a smaller fighter and expect him to move up is silly, And1 has fought as low as 167, he might not be able to make it anymore, but he needs to do it if he wants it to happen, if he is loking for a challenge, Jon Jones is right there at 205
If I was GSP, I would accept anything unless it at 175 lbs maximum