Weekly Flyer in the mail

So this is crazy. I shop for five family members every week and can spend $350 easily. My son, who lives with me, gets a flyer in the mail every Friday with a 10% coupon for him or any resident. I, on the other hand, get no flyer. The coupon is for only one of four Weggies in our area, the smallest one. I’m wondering if they are targeting his demographic, not mine. I’m fine with cashing in his coupon (we get a set of two each week). While I’m not complaining, I’m wondering if I wasn’t supposed to be getting about $40 off my weekly bill. I feel kind of guilty and like I might be ruining this for the rest of light shoppers. I suppose Weggies could have put a limit on the coupon if this was a problem for them.