This would be ludicrously easy to game. Crowdsourcing would also be ludicrously easy to game.
The problem isn't solvable without a good AI content scraper.
The scraper/indexer either has to be centralised - an international resource run independently of countries, corporations, and paid interest groups - or it has be an impossible-to-game distributed resource.
The former is hugely challenging politically, because the org would effectively have editorial control over online content, and there would be huge fights over neutrality and censorship.
(This is more or less where are now with Google. Ironically, given the cognitive distortions built into corporate capitalism, users today are more likely to trust a giant corporation with an agenda than a not-for-profit trying to run independently and operate as objectively as possible.)
Distributed content analysis and indexing - let's call it a kind of auto-DNS-for-content - is even harder, because you have to create an un-hackable un-gameable network protocol to handle it.
If it isn't un-gameable it become a battle of cycles, with interests with access to more cycles being able to out-index those with fewer - which will be another way to editorialise and control the results.
Short answer - yes, it's possible, but probably not with current technology, and certainly not with current politics.