Tell it to the Christian that made the silly claim.<quoted text>
It is relevant.
God operates within certain guidelines. For example, when He covenants with us that if we do a certain thing, He will bless us with a certain blessing, He is then bound to come through on His end if we come through on ours, or else He lied and would cease to be God.
He must operate within the realm of righteousness or He would not be worthy to use the priesthood power and He would cease to be God.
Part of righteousness is performing acts that further righteousness. Idleness and acts that produce nothing, serve no purpose and therefore would be taking time away from righteous acts that He (or we) could be performing. Therefore it would be against the will of God to make a rock for no righteous reason. Testing God with such a statement is unrighteous and a waste of time to ponder. This is why my answer is relevant to your question.
It's not that I'm twisting your question into a pretzel. It is that your lack of knowledge about God leads you to ask the wrong questions.
It is funny how Christians blame satan for all bad and god for all good. With these rules you can always find some way to justify your statement here.
Fact is, Christians that are good people often get crapped on with bad luck. Churches get slammed by tornadoes and innocents die and suffer greatly.
Counting blessings can be warped by flawed perceptions. Pointing at the devil makes this perception all the more flawed.