I would think some people are jumping to the conclusion that the Mavic Air is the new Spark, but why would you drop your entry level drone? Drop the price to give you a suitable gap between your Spark, Air and Pro in the small drone space, absolutely yes, but not everyone wants 4K etc. or can afford £800 for an Air, if they drop it I'd be very surprised but it could be that this version was a market share tester, if the market isn't big enough then it could well be retired, it could be that they saw too many sales lost to the Spark that would previously have gone to the Pro hence the lower price point for the Air or Spark 2 is closer than we think and they are looking to shed some weight like the writer of that piece hoped.
One thing is for sure, I got Air envy until I realised that my Spark can do 360s, now in love with it all over again

even if they stop selling and eventually supporting it I will still keep it as my 2nd or may then even my 3rd drone