Yeah, I hate to say it, but maxing out on machines does NOT equal real strength with a barbell or dumbbells. Not even close.
I used to be able to bang out 3x5 on the Hammer Strength plate-loaded incline press with about 360-400 lbs., and my *true* strength for a barbell incline bench was probably only about 265-275 lbs. at the time for a max single. Same thing with their decline bench, I maxed it out for a few reps @ 450-500 lbs. in plates but there's no way in hell I could have come remotely close with free weights.
Sure, it looks impressive, but it's a poor gauge of true strength and is more of a "let me show off by slapping on twice the weight I can do with a barbell" sort of thing. They're fun to play around with, and obviously they have their place in some training protocols, but do very, very little to show anything remotely valid for being "strong". One thing about them is that one can learn the leverages better to get more weight moving on them, and when you take out those pesky stabilizer muscles, you'll find that things are a LOT more impressive in the world of machines than they are with free weights.
Not meaning to put the guy down, it's obvious he's not weak, but anyone who wants credibility of proof of a bull-strong fruitarian is going to want a lot more evidence than what's in those clips. If you posted those videos anywhere that omni folks are training hard and heavy, they'd only use it as evidence to show to each other that they were right in their thoughts that you can't get too large or strong on 80/10/10. It would do more to validate their opinions than change their minds