About weak pokemon's viability and "lies" over it

I swear people are making things up to get mad at. Probably getting statements about competitive/hackroms/nuzlocke and distorting them like they apply to main game.

Saw this post on twitter of a guy calling poketubers lying freaks over a post of someone beating frlf with a team of weak pokemon cause acording to him they all say most pokemon arent viable. I can only assume he's either lying to get attention or he completely misinterpreted a competitive video for some reason...