You can help the forum to make it clean by deleting some of your old post
A week or two ago, I've deleted almost 300 of my posts from 2017. They're mostly weekly reports and authentication posts from finished/abandoned bounty campaigns.
Other than doing those stated by OP, I think we can help more by tracking alt accounts that are active in bounties. It takes more time but a lot of posts will be avoided if those accounts will be reported.