Pre Black Friday Sale

The British does not celebrate Thanksgiving, so the idea of Black Friday never makes sense.  A few years ago, everyone hopped on the bandwagon, overwhelmed and paralysed the delivery network as a result, every since, the 'Black Friday' is getting earlier and earlier.  This year, the 'Black Friday sale' starts 1 weeks before the 'Black Friday'.  We should just consider British Black Friday being 1 weeks before the American Black Friday.  Could this be considered as cultural appropriation?