Of course it's impossible to prove, which is why so many people are doing it, like you/your team, at least recently. At some point in the past your blog seems to have gone from "real" to "slop".

I've seen enough LLM sh*t to know.

I know you'll never admit this. I don't care about that. But please understand that your credibility goes out of the window with this; it doesn't make it look more professional, especially to developers.

If I'm extremely wrong here, I genuinely apologize, but I would be very, very surprised.