Yes he did dumb it down quite a bit, but
most of what he has said is true!
It would appear that he is suggesting larger flowing injectors but he didn't really come out with the size (up to 190s?) as much as he bestowed 44% nozzle, which is actually pretty reasonable. You have to hone them or have a batch EDM'd at that size. Poltron did make a run of injectors for a client that were about 50%, but I don't know who that client was.
The turbo stage .5 is not unreasonable for stock injectors, but is a bit of a waste unless your original needs replacement. The 65mm (64.7) sure seems like a stage 2. What the turbine side is or who makes it is another issue.
He is 100% correct that exhaust flow to the turbine is more critical than the intake side, although there can be gains to both. Think Steed or log exhaust with matching up-pipes! More effort is required to work on the exhaust than the intake.
Ringed heads - Nice to have, but you pay to play.
Ported heads - Nice to have, but price rises and flow data is a must or it is wasted effort.
Radiator - Nope. Note required. Maybe an inter-cooler with matched pipe of the correct diameter.
Tuner - Absolutely, but who's tune?
Regulated Return - Only needed if you want to push the truck hard or play harder than your fuel system can handle.
The last item remains, don't go too big unless you have seen the results in person. This seems to be a common theme.
This is probably his best video.
He's just pimping his crap for the $
Just like many other dealer!