I’d bet normal procedure is to throw out a bunch of perfectly good maps at the end of the season so that they’re not handing out maps with last year’s messaging and advertisements (for shops on the hill and such).this really blurs the line of what you can do and what you should do. Can you eliminate paper maps? Yes. Should you? No. I would be interested in hearing what the actual production of the maps are and what is left at the end of the season which IMHO where the waste probably is and if thats IS the case, they are throwing out the baby with the bathwater.
Aside from terrain updates, the old maps are perfectly good, of course. I usually grab one every year or two for each area I ski, just to keep in a pocket. It always winds up being useful at some point, either for my own group or to help someone else.