I am not aware of anyone really successfully, defeating spam at the moment.

I mod a 1 million+ Facebook group and they can’t even prevent someone from making 200 posts in a minute with the word “crypto” in it. The word list will flag it, but the spam filter won’t.

Reddit constantly has people messaging you in chat about “opportunities.”

Email is a disaster.

My personal blog has over 100,000 spam comments sitting in the filter so at least they were caught, but processing them is impossible.