It's a safety recall, not a warranty. They honor it not based on their "values", but because they're required by law to do so. Forever. Trivializing a safety issue for what may well be the owner's only way to get around doesn't help.
Papa Tom , have you checked with any not-so-local bike shops? There's actually a shop here, long-standing business, one of the biggest in town, and they've started advertising on the radio recently. In one ad, the owner actually describes this recall and describes how they still get bikes in with the recalled cranksets. So obviously there are shops willing to deal with it. Maybe there's one you can ship your crankset to, who will in turn ship it off to Shimano. Meanwhile, as suggested, just look for a suitable replacement crankset, new or used. Try a shop that sells used parts online, such as the Old Spokes Home in Burlington VT.