You could have done that before AI as well, albeit with a little bit more effort. Plagiarism has been quite common.
That being said, if whatever Astra is spitting is really innovative, the prompt author understands it, proof checks it and can support it in front of a live evaluator I think it’s good enough for me. In practice I think that prompt would be just one of many, perhaps also some “old school” evaluation and improvement before the thesis is done. Again, I see the AI as a tool.
You could ask Astra to generate you an e-commerce website with one prompt. Can you show it to someone and claim it as your project? Can you actually use that in production?