I'd flip the question around: What do you do with what the AI gives you? The same thing happens with a book - you can consume it passively or work with it actively. With ChatGPT, the difference is just that the answer is tailored specifically to your question, which makes it tempting to simply accept it. That's actually a real danger.
But here's the important point: AI tools often force you to *articulate* your problem in the first place. That's already real thinking work. You have to spell out what's confusing you, what perspective you're missing. And then - yes, then you need to take initiative. If you actually test the outputs, question them critically, cross-check them with your own knowledge, and develop them further, you're not atrophying your thinking skills, you're using a tool like a sparring partner. That's not lazy, that's efficient.
The ethical problem only arises when AI *replaces* your thinking instead of complementing it - when you stop checking whether the output makes sense or whether it fits your specific problem. And that's a habit question that *you* control, not the tool's fault.