Except Gmail's spam filters still have false positives and false negatives, meaning I have to go through the spam folder once a week or less to make sure I'm not missing anything important. I still need to avoid how much spam I have to scroll through.
False positives? Since years I have not checked my gmail spam folders and whatever I've missed, I did not miss it.
If your email triggers gmails spam filter, you're doing it wrong. YMMV.
Yet the spam continues and the need for the spam filters isn't going away. This property of the ecosystem makes it considerably more complex to own your own mail server.