I’ve had a look around over someone’s shoulder. I think coming from strongfirst, the programming was very linear and might leave you wanting - things may have changed though. Lots of near limit duration isometric holds (expect lots of burn) for progressively longer times.
From what I’ve read, you’re expected to pay your dues on the base level programs for a very long time or risk injury. I can’t say I’ve run the program, so I can’t truly comment on the effectiveness.
I know when I switched from a GB-esque approach to the reddit recommended routine, I started getting bigger and stronger at a much faster rate. I really like listening to Sommer talk about training though.