No, he isn't, because that tells him absolutely nothing! Strange can't help but look briefly aggravated at Shima's transformation.

"No I'm not! There's two options here, either transformation or illusion. I'm hoping it's the former as transformation magic's more easier to dispell. Honestly, why so many people here seem to actively seek out that strain of magic is beyond me. You'd think that illusions would be more capable but no, let's physically turn into a dragon instead."

Everything about Strange's demeanor implies that he will go on talking and bitching unless Shima cuts him off then and there. Once again, poor Shima isn't getting any semblance of respect.