I love what you do and the idea of helping with discovery, but...
basing it on popularity rather than the users unique interests just recreates one of the big problems of traditional silo media, the two caste system.
First you have the "upper" caste accounts (aka "Mr Beast"s) who got popular early and then snowball as being popular means being more recommended means being more popular ad infinitum. Then the lower caste will never be recommended as they're not already popular.