Yes it's pretty much the same as Facebook Like, except that the accounts are decentralized so could never be banned. Also you could have a group of people "like" an edit as a group (shared identity).
This project feels a lot like “we could do things with blockchain because…we can do things with blockchain”
As mentioned elsewhere, there’s already PKI stuff for Wikipedia, there doesn’t seem to be a lot of point, or benefit? Just because there’s some sort-of-convenient infra in ETH land doesn’t automatically make that inherently useful to anywhere else, and honestly comes across more like a veiled attempt to pump MAU’s on blockchains/meta mask.