To be honest I haven’t seen any of this locally, most shops have decorations up , advent calendars are sold. In fact there are Christmas trees everywhere - so it’s only the minority of companies that are reacting like this, certainly in schools it’s happening. He mentions that Tesco is not calling trees Christmas trees anymore, but the tescos near me and online is calling them Christmas trees.
In fact I did check on line and only one of their trees they have labelled ‘ evergreen ‘ - they have loads of other ones and haven’t changed the name, so it’s not general.