A few weeks ago I signed up for a Udemy course and opened an account there for that reason. This was literally the first email I got from them, more than five minutes before normal onboarding/invoicing/etc. mails. I don’t even remember consciously having deselected any “Newsletter” checkboxes during the process – but even if I did that still means I have never signed up for anything in the first place.
Another day, another fun game of “Just a very low priority UX bug, or maybe a dark pattern that they figured out leads to 0.2% more subscribers in the end?”.