It's true that if you're shopping at thrift shops now you're seeing less 70s and 80s weirdness and more 90s and early 00s Eddie Bauer, Gap, type stuff... washed jeans, oversized cotton knits, and structureless flannel shirts. Just the way stuff cycles.
Really like the polo Kamoshita is wearing in that vid--collar, placket, sleeve. Anyone know where to find one like that? Sorta ban lon style but not polyester?
(I also like that quotation, on how he appreciates being corrected by a mentor)
"Popover" is fine, if you won't wear them because you don't like the term, then don't. The alternatives (polo [inaccurate], rugby [same], woven long sleeve half placket shirt [ridiculous when a shorter alternative is available]) are no good. The shirts have been around a long time; why should the name change because you saw a mediocre version at J Crew and can't get over it?