If I didn't understand how an amplifier works his big words and made up theories would sound more impressive. You don't understand what he's talking about and are being baffled by his bullshit.
DING DING DING WE HAVE A WINNER!!!
Parts of his videos are informative if you filter out his bullshit but otherwise I find Luke to be a rude condescending double talking douchebag and a dick to try to do business with. And if you think hes a dick in his videos you should try talking to him on the phone.
There are other better choices as far as amp builders/repair techs go. I wouldn't send Luke a bunk set of meters to work on. I stay tight lipped when it comes to whos kind enough to work on my amps. The last I want to do is flood someone with bullshit and piss them off.
Pill amps are quickly becoming dinosaurs because of the lack of quality transistors and fet technology isnt quite there yet. Some amp builders will keep pushing the chinese junk to keep making money. The junk transistors just means more repair work.