I watched his CLA/overhaul of a Pentax K1000 and thought the same. There was minimal disassembly, very light cleaning and oiling everything in sight. It doesn't really align with how I've seen other professionals talk about a CLA. It also doesn't align with the National Camera Repair Guide, which recommends cleaning a lot more of the individual mechanical parts, and only oiling fast moving parts in the shutter.
At the same time, I've only ever seen good reviews from customers and he does charge pretty low rates for his repairs. So from a repair value perspective, I think the videos are a good illustration of the most straightforward way to get your camera fixed. But from a learning the fundamentals of camera repair perspective, maybe not the best resource.
For my part I'm completely relaxed about repair techniques.
The original instructions from the manufacturer - and these are the only ones that are authoritative - are usually no longer available.
From then on, it's a matter of interpretation and you'll find as many opinions as there are repairers.
I'm therefore very reluctant to criticize the work of others, especially if they've been in the business for a long time and have been successful.
I can agree with that with my own work.
Little of it is done probably according to the manufacturer's instructions; the only thing that counts is whether the repair is a lasting success.
As you gain more experience, you also deviate from the opinions of recognized authors and practitioners.
That's a good thing, because there is no silver bullet when it comes to repairs other than the one specified by the manufacturer for their products.
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