Noticed it immediately. I get a lot more spam messages per day than I thought that I did.
They’re the very obvious, very obnoxious kind of spam, and Gmail still correctly sends them to the junk bin, so I wonder if they were shadowbanned before and Google simply decided to make the process more explicit (which I don’t hate on principle).
Either that or my address was scrapped from somewhere by a spam bot and the timing is coincidental.