Its fairly relevant though isn't it.
The game changes and evolves due to needs such as stats, scouting, sports science, social media, multi club ownership, 5 substitutes etc etc
I don't like any of that and much prefer the halcyon days of 3 subs and a squad of 14, but when your evaluating things you need to look at what's relevant to the modern game, its football for nerds
If you didn't look at it like that, you could comment something for example that Scotland produce tonnes of world class players because of Kenny Dalglish, Dennis Law, Graeme Souness, Billy McNeil, Paul McStay, Danny McGrain, Alan Hansen & Alec Cleland