On your takeaways:

> - over half the Nostr listed relays are using some sort of spam mitigation technique(s)

That's great to know!

> - the attack was still achieveable

Attack of what exactly? You wasted 10gb of space on some relays, and got to top on one app. Other apps were fine.

> - socal media is easily manipulated

Nostr? That specific app?

> follower counts and engagement are worthless

They work in some context and not in others. For algos, i.e. that order profiles by popularity, fc is bad, which was always known, and no "spam prevention" will change that.

> - content is the real treasure

How can this insight help improve the app that you attacked? How can it help prevent spam?