Affinity, you pay like, what, fifty bucks, and you’re done. No subscription, no fucking around with cracks. That’s a lot more appealing to someone still learning their craft.
I have seen this change happen to Photoshop, there are a lot more young artists who are using Clip Studio or Procreate than Photoshop for their work. I constantly see articles here talking about how UI people are using Figma or Sketch or whatnot instead of AI because they are both better-oriented to what they do and are a lot cheaper, with a buy-once model instead of a subscription.
Adobe is also terrible at listening to their users. I can point you to a top-ranked feature request for AI that had its “user story” put into the pipeline to be implemented “soon” something like two years ago, which is a feature I personally was putting into their old feature request inbox a decade ago. Illustrator is really, really ripe for disruption, and Affinity has a solid competitor judging from my brief explorations of it.