LOL, you GUARENTEE they know a whole lot more than me?
You've posted something that's unfounded, live with it. Yes their OPINIONS are based on years of training and study. But so are the OPINIONS of the chaps who train in every other way that's possible. I could sit down and write you a paper as to why beef sausages taste better than pork sausages, then I could invite someone along to back me up maybe play devils advocate. At the end of the day it means absoloutly nothing, a full body routine could work for Mr A but for Mr B it could be a pointless endevour. Mr B could respond to a split.
It's a shame to see people sucked into these articles, they're obviously written well enough to convince some people
Really, Just find something that works for you and keep it up. Don't sit online and read something some other bloke says...what the hell is that point in that? Go out and do it yourself, that's where my knowledge comes from, not sitting in front of a computer screen becoming the next keyboard Arnold.
Now please, remember to think before insulting peoples intelligence and knowledge in your next wise post.