Anyeevs simply reached a new plateau- upped his bottom line- with his win over Stills back in March. Millions of people saw it, too, so Anyeevs is trying to capitalize on his success with winnable fights- because unlike Stills or even Ronda- a loss can really hurt his momentum. Anyeevs and his brother are both "anytime, anywhere" type of guys, unless big money is involved. Can't blame them.
UFC wants at least one mega fight for Anyeevs while he's hot. I think he, himself, has already turned down a fight with returning ww GOAT, VHP, because he's looking to ride this wave and wants nothing but Stills (maximizing his paycheck). Of course, he'll never tweeter this information.