Things like .rocks, .guru, .club, and all those other recent gold-rush gTLDs have been a disaster from the spam standpoint*. It doesn't help that some registrars are complicit via allowing massive bulk name purchases, so I see zillions of somebody@{random-word-1}{random-word-2}.goldrush addresses, all with valid DKIM/DMARC.
* Not to mention phishing. Is that link going to foobank dot com or foobank dot club?