Getting into bad debt for it, yes, avoid and that goes for many things in life for non essentials.
But a 0% tool to use responsibly, why not, for some it might fit in to their situation? People seem happy to pay over the odds tied into a contract phone and data, personally I think that is bonkers especially when a no nonsense phone for peanuts will do the job for many claiming poverty.
Personally I avoid anything windows. So Apple, as expensive as it is (and it can be eye watering stupid price), is my preferred option. Might be others out there with the same outlook and can afford the long term option better than the up front hit.
Outside the 0% though I would be going to a bank if I needed to long term finance the mac and within my means.