Of course the pi 4 is still part of the product range. It’s still being actively manufactured and sold. Same for the pi3.
As far as memory size, that wasn’t part of your original complaint. You want a $35 computer, that’s how much you get. The original pi was $35 and had 256mb of ram.
-edit also, $35 in 2012 is $47 today with inflation. The pi 4 is a crazy good deal and readily available. This complaint just has no merit.