Thanks for the info..although not really pertinent to the OP's questions, I believe they said they were NOT feeding 24/7.
I'm fine with how we've been raising meaties over the last four years--I was simply sharing with the OP my experiences so far.
PS...I also have googled the topic and there are other websites that recommend free choice feeding due to the high demands of their rapidly growing bodies so I think it really is a personal decision made by each individual based on what they feel is best and what their own personal experiences are...there are sights that also recommend the deep litter method for bedding rather than cleaning daily..again, individual decision.