Whats This “Gen” or “Generation” BS?!

When you need a fender for a 1990 Cummins w250, and want to know what other years will fit, the term First Gen helps a lot.:)
I know what you’re saying, it’s just 21st century new lingo that is popular now, catchy and hip etc. I just don’t see the need for it. But it’s all good. :)
I speak 1981-93 Dodge D### or W###, or 62-64 B-Body, 80-83 J-Body etc, that’s very specific as to the exact models. As it has been since the factory so designated. This Gen stuff is just redundant new speak.....just like another phrase I absolutely disdain: “Game Changer” .....that one really “grinds my gears” LOL :rofl: