Well, I'm over 10 and I believed a lot of what he said because they don't teach anything about older cars in auto school, it's all about the new stuff which is really different than the older stuff.
I took his word for a lot of it because he was around when these old cars were newer and the normal thing. I was born in 1986 and by the time I was into cars, these old cars were already ... old
Old or new, 1957 or 1988, there is a right way, and a cheapskate way...one is doing the job correctly, the other is justifying doing garbage work for YouTube "veiws" your smart enough to figure it out