It’s the original project that the original developer gave to somebody else, but then decided to continue working on the project anyway under the „Origin“ monik

It’s the original project that the original developer gave to somebody else, but then decided to continue working on the project anyway under the „Origin“ moniker. At some point ublock was sold and to quote Wikipedia: „since February 2019, uBlock began allowing users to participate in "Acceptable Ads",[21][22] a program run by Adblock Plus that allows some ads which are deemed "acceptable", and for which the larger publishers pay a fee.“