As AI is reaching phd lvl reasoning

It's not reaching those levels. Currently it has 0 capability of reasoning. That's why AI is capable of bullshitting you with 100% confidence if you send a message tricky enough, because it's not capable of knowing what it's saying. It just calculates what chain of words has the highest probability of being the most appropriate response. That's also why it can't do math - because it was trained on words and not calculations. Or why it needs to be trained for each language seprately. It's not capable of applying its knowledge from different language and translating it. It's just a technology to repeat words. It doesn't "know" anything.