While that may be true, it’s also true regardless of the ranking algorithm or which web search is the winner.

Webspam will seek to game whichever search company has dominant market share and they will structure their spam to overcome the filter and ranking specifics of that engine.

Considering tools like GPT-3, one could easily imagine in the limit, a spammer running a large number of searches through a search engine, finding out what ranks high, and the training a generative model on that dataset to produce similar articles. Auxiliary signals like inbound links and DNS records they can also usually work around by purchasing domains or buying inbound links.

It will always be a war and there is never going to be a victory over webspam. Even with something like web3 where posting content costs money I can imagine ways spam.