Earlier quoted context omitted.
What effort/sacrifice was expelled? Flipping through the paper with a pair of scissors? You didn't even need to buy the paper as the coupons were ignored by the majority of those that did buy the paper and would just toss the coupons. It took no more effort than what people expend doom scrolling the socials.
People "waste" time on lots of things. But, yes, coupon-clipping and redemption is a certain amount of effort and I'm not going to bother unless it hits a fairly high threshold for something I'd have bought anyway.
Write on here that it's a waste of time is probably the biggest waste of time. At least it's low effort.