I disagree that it has limited uses and I do believe it is a big step towards science fiction level AI. I use it almost every day. It's great for so many things, cooking, spelling/grammar, coding, brainstorming and information to name a few.
I'm pretty tech savvy but know nothing about coding. Using ChatGPT I was able to create VBA code for work that will save me and my team 100's of hours per year. It took a lot of time, patience and troubleshooting but I managed to get something that suits our needs exactly and functions as I want it to. I would of never done this otherwise. ChatGPT made it possible.
I will admit that it has limitations and can be quite stupid. It won't do everything and you have to help it along sometimes. But at the end of the day, it is a powerful tool once you learn how to use it.