I think the EU and newspapers should focus on the realistic and useful e.g kicking Hungary out of the EU, strengthening EU bonds, making life across the EU as pleasant as possible, and rooting out anti-democrats.
Canada in the EU, while a nice thought experiment, is a detraction from much more important topics. If Canada had a free trade agreement with EU and free movement of its citizens, that would be an amazing start. Wouldn't mind being able to just move to Canada and find a job there without having to pay thousands for a VISA first.
Edit:
Finally, green-lighting Canada’s EU membership could frustrate some countries, such as Turkey, which have been queueing up for, literally, decades.
Lol, Turkey has a quasi-dicatator at the helm. They'd need fair and free elections first. Even if Canada hypothetically joined the EU, who cares what Turkey thinks? If they can't and won't fulfil conditions for joining, too bad for them.