It's mainly because ChatGPT is the only tool that starts section headers with things like rocket emojis. You also have em dashes and all of the text has the same 1-2 sentences per paragraph structure that you would get from a chatbot. Feel free to decorate your page however you like, but the current look gives off the impression that you were too busy at the end of the jam and asked an LLM for a description that you could copy paste into itch.io.