IMO, DIY instructions, like DVD's/etc are meant to appeal mostly to a target audience of the clueless, and/or those who're not used to working on their own mechanisms, guns included.
What appears to be bias is simply enthusiasm from those satisfied customers - who've "had their eyes opened" because an apparently difficult task was suddenly made easier.
That said, Steve does excellent work, and has a top-drawer reputation amongst the CAS crowd especially - since that's where most of his work has been.
In addition, he supplies some ready-made, normally hard-to-get or hard-to-make, parts/accessories at a reasonable price, which are "drop-in's" for those who like to do their own work except the manufacture of small parts.
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