Although some of his techniques for fighting scammers, spammers and abusers may be considered controversial, this user has done more for Steemit and Hive than most of witnesses and "investors".
He stepped in to fight the worst platform abusers (including Chinese and Korean communist investors/whales trying to scam over and take over the platforms), while most did nothing to fight it and/or improve the platforms.
If somone has got on his informative bot (which you call spam), it is for a good reason.