No, that is a bit extreme. I would rather use a mechanic that has an underlying understanding of how a ICE works, rather than a tech that just plugs in a devic

No, that is a bit extreme. I would rather use a mechanic that has an underlying understanding of how a ICE works, rather than a tech that just plugs in a device and swaps parts. I don’t need the mechanic to know how to fabricate an engine from scratch, but does have an understanding of what is under the hood.