Somehow this doesn't surprise me, they still want to be able to spam you with offers (I legit got a text today from Martha and Marley, I have not used them for 3+ years) and possibly sell your data to make more money. It does bring up an interesting idea, how many people use unique emails for each company to track spam. If something like that was possible for shipped goods (wouldn't work well for food but that is the…
Probably not a lot, but Apple's "Hide my Email" feature is now native to iOS and should in theory make this fairly easy to do. I do this _occasionally_ when signing up for new sites.