Yeah, this argument is old but we lather, rinse and repeat from time to time.
I mean I guess if somebody is OCD about following rules, never goes over the speed limit and throws out food if it goes past the expiration date it would track that they are weighing their own discs and freaking out over a few grams.
Nowhere in the rules does it say I have to weigh my own discs and verify the weight written on them, so I don't. If the disc says 175g and it's really 178g, I'd never know. It says 175g and that's good enough for me.
They are not weighing discs before DGPT events. Discs are not being checked at any events. It's not a problem anywhere IRL that anyone is worried about. I don't know why it comes up here as often as it does, but here we are.
tl;dr: Just throw them, nobody cares.
Question....wait for logical, experienced replies.....take up contrary position and then troll for pages to get attention. Over and over.