It can do some thinking. You can give it instructions to modify a piece of code that definitely isn't on the internet with several steps and it attempts to follow instructions, which, for a human, requires formulating what steps to take.

The prompts have to read like good written requirements for something, so they have some degree of specificity.

But the fact that it can follow instructions and carry them out almost certainly could be considered some form of thinking, especially on novel text not on the internet.