Automod rule to combat recent spam posts

I keep seeing the same spam posts at the top of my feed, it's always the same format.

"I made a bunch of money thanks to u/samestupidusername " blahblahblah. They get an upvote bot to upvote it and then either the mods take it down, or i've noticed the user takes it down, and then posts it again before the mods can remove it.

This same spam attack is attacking multiple subreddits. So I made an automod rule to help combat this:

--- type: submission body (regex): ["(?i)u/DMare5"] body (regex): ["(?i)u/DMare6"] body (regex): ["(?i)u/DMare7"] moderators_exempt: false action: filter action_reason: "Mentions banned user" comment: "this is probable spam" 

you will need to manually update this list of banned usernames, but since reddit won't implement captchas, this is what you gotta do.