One of the best thing a person can learn is that they’re not as smart as they think they are. Another great thing to learn is that your own notion of what God is doesn’t always compare to how He’s revealed Himself.
“So your God is incapable of doing anything He wants?”
First of all. That wasn’t what was put forth. “He wants” wasn’t represented in that statement AT ALL. Secondly, as for the possibility of there being things God cannot do, consider His Word.
Tts 1:2 In hope of eternal life, which God, that cannot lie, promised before the world began;
Num 23:19 God is not a man, that he should lie; neither the son of man, that he should repent: hath he said, and shall he not do it? or hath he spoken, and shall he not make it good?
It’s a fallacy, having no meaning, and cannot be answered in a quick yes or no because the question doesn’t make any sense.