Yeah, guys like Farrell, Vunipola, Daly, May and even Itoje were good players, they just aren't now.
I think the problem with the premiership is it produces lots of players, but the actual standard across the board is nowhere near as high as some think it is, so guys like Marcus Smith, or someone like Sam Simmons look like absolute superstars at that level but the step up is too much for them.