Adobe has a number of products that are not parts of the Creative Cloud and so aren't available under the Creative Cloud All Apps membership. FrameMaker, for one (that's my primary program; I'm a writer, not an artist). I don't know if there are plans to include Substance Painter and Designer in Creative Cloud or not, but from what you post it is at least still available for purchase. I hope Adobe provides an update on this at some point.
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