Even though I have enabled spam filtering the blog get swarmed with blog comment spam for some reason.
Since their are no user generated comments, time to start fresh again:
$ sudo -u www sqlite3 trac.db sqlite> DELETE from fullblog_comments;
Next job, find out how the comments get here in the first place.
UPDATE 1 dec 2020:
Seems like Recaptcha2 is being automated or abused somehow:
Captcha (15): Human verified via CAPTCHA (Recaptcha2)
Deleted it in favor of my own running my own version... to be continued.