Really bummed to hear Affinity’s PDF export is still so behind spec. Layers (to the point they would get recognized in Illustrator and for our uses, there’s another meaning of layers in the spec as well) have been a thing in PDFs for a decade now.
Last time I thought about this as my morning adderall dose kicked in I did a bunch of digging into possible ways to export SVG to a proper PDF. It seemed reasonable to at least get it “out” of Affinity, because SVGs do have their own sort of layers, but all of the open source PDF libraries that can convert SVG also produce the same result. I imagine Affinity is relying on one of these libraries which in terms of development prioritization is something I am more than understanding of.
There’s probably things that Tayda could do to retrofit but it really is 100% just Affinity not being able to produce an industry standard production file. I had been so tempted to see if it would work for my design workflow, because Adobe is a devil in its own right, until seeing everyone’s experiences with it over the course of this thread.