Interesting, eyebrow-raising list of “most abused” top-level domains at spamhaus:
https://www.spamhaus.org/statistics/tlds/
Based on the experience of a user in the ISPMail’s matrix room, gmail considers the .email TLD more spammy than others.
Even with everything properly configured (spf, dkim, dmarc, ptr) and having been around for a long time, emails from that user to gmail still land in the spam folder…