I work part-time as a cashier at Lowes and am not aware of this. And we can wish the customers a Merry Christmas.
At our Lowe’s store we have always wished our customers a “Merry Christmas”. During the Lowe’s weekly “Op’s Talk” (internal communication program) they talked about the “Christmas Trees” arriving this week, and they (the G.O. in North Carolina) also discussed the store setup for “the upcoming Christmas season”.