I mean even if it is marketing for them they still did the work and developed these features. I had some vision issues recently and was glad there were options to make text more legible to me.

Additionally I don't believe this is just marketing. This is adaption to a changing market. Apple's customer base is aging and having these kinds of features will allow them to keep using Apple products for a longer.

They have done the work, but I don’t see much work that’s beyond what’s been previously capable without Apple Intelligence. The marketing of Apple Intelligence is weak here, not the foundational abilities.