Didn't miss the Philly folk, just didn't comment, think I was making a quick pass through LAF that day. But nice stuff as always.
As to the grinder, I've found that for a LOT of younger folk, 30-40 and below, owning power tools is a lot more rare than it was for those of us with a little more 'seniority'. I suspect this is a result of losing so many shop classes in junior and senior high schools, just never learned how to operate safely and now scared to admit their ignorance. I had metal shop in junior high - these days I don't think many schools can afford the liability insurance. The younger set might own a power driver but even that isn't in a lot of tool sets. Heck, some of them don't even know which end of a hammer is the business end or a standard from a Phillips head screwdriver. Righty tighty, lefty loosie! I hate to think how they'd cope with reverse threading!
And with cars so much more complex these days, even I don't work on my own vehicles anymore (thankfully). "My" first car, my father's old 65 Chevy pickup, had enough space under the hood to literally crawl around inside and almost every component was easy access (no AC or any other luxury - heck, not even seat belts!). Now everything is so crowded together with so much electronics you must know what you are doing to avoid voiding warranties - or forcing yourself into a multiple thousands of dollars repair.
Thankfully there are still people entering the trades, even lots of women, so no fear of losing abilities - just have to pay through the nose if you don't know how to do it yourself. At least here in the US of A. I can do most of what I need, thankfully.