Luke is a tricky one, he does know a lot of stuff and in his defence he isnt afraid to go against the grain of established knowledge based on his own experience. granted whilst its mainly for comedic effect his way of so confidently stating things as fact is tricky because whilst he may have a point at the core of his argument, stating things so bluntly can be easily misinterpreted.
This battery issue is a good example, i have experienced first hand the results of too much amp draw on a lipo that cant take it (fortunately it was during testing and it was noticed before any actual damage to the gun/battery). My solution was to use bigger batteries (same voltage and c rating, just larger capacity).
There are a few issues i definately disagee with him on (like aoe), he makes a big deal about lost cylinder volume yet a lot of the guns he build end up short-stroked or have ported cylinders (so evidently cylinder volume doesnt matter that much....) Of course if you dial down the tone to "lots of people way overdo aoe" it makes much more sense.
Even funnier in that vid he says to use "silent" piston heads which do exactly the same thing only with the mass mounted on the piston, where you dont want mass (without the extremes of swiss cheesing)
But then nobody can be an expert at everything, and we all have the things we thought were true or good ideas or good products that turned out not to be the case, which in fairness is sort of the point of this thread.