I agree, but then where and how does it end. If it was purely a case of recalling/repurchasing/replacing defective units that would make sense. It might also make sense for Weber to provide some type of reduced, limited warranty on second owner units for which they have not incurred any real costs trying to troubleshoot and repair original owner units beyond the standard replacement parts.
However, after following a number of pellet grill owners sites, there are a lot of people who simply find them to complicated or to time consuming or to inconvenient and want to off-load them. Likewise, there seems to be quite a number of “abused” units up for resale. Those “buyer remorse” purchases and resales are a real problem for manufacturers.