11 points
If you’re careless with your prompting, sure. The “default style” of ChatGPT is widely known at this point. If you want it to sound different you’ll need to provide some context to tell it what you want it to sound like.
Or just use one of the many other LLMs out there to mix things up a bit. When I’m brainstorming I usually use Chatbot Arena to bounce ideas around, it’s a page where you can send a prompt to two randomly-selected LLMs and then by voting on which gave a better response you help rank them on a leaderboard. This way I get to run my prompts through a lot of variety.