Proof of Work doesn't solve spam because spammers have more PoW than regular users. In Bitcoin it is effective because its 1 against the cumulative PoW of all others. Also, its effective against redoing history, not spam - see ordinals.
There is no cumulative PoW in nostr, so easy win for the spammers.
This is not an "us versus spammers" POW, it's suggesting that clients must provide a POW in order to submit a post, as nostr:npub17u5dneh8qjp43ecfxr6u5e9sjamsmxyuekrg2nlxrrk6nj9rsyrqywt4tp laid out here:
https://blog.lopp.net/protect-contact-forms-from-spam-with-proof-of-work/
AFAIK, the initial idea behind proof of work was to incur a cost to sending any message over a network as a spam deterrent.
I post a few times a day, so wouldn't mind a total of 30 seconds of my phone's battery life being used for hashing notes.
But if a shitcoin grifter needs to spam a million posts to grift someone, the cost they would incur could easily exceed the cost of the grift.
Am I missing something?
