It's entirely normal. It's been a common rhetorical device for centuries. It may be more common now due to AI, but language is memetic and people adopt popular styles. It's impossible to say whether this is AI or not.

To be clear, I am more anti-AI than most people, but AI-hunts like this are only a waste of time. And frankly, they only distract from the message, which in this case is more worthy of discussion than whether or not the messenger used AI to compose his message.