Not to the same extent at all. If you use ChatGPT for a while, you'll see it writes like that very frequently. Humans do write like that sometimes, but not with anywhere the frequency that ChatGPT does it. That's weak evidence for it being ChatGPT.
Suppose ChatGPT uses a semicolon more often than an individual person. On a pageful of comments from many random people, someone using a semicolon doesn't mean they're a bot even if 100% of their comments on that page includes one.
So based on your one example, you immediately went ChatGPT! because…?