To be fair, Canva's product is uniquely a good fit for Gen AI. Casuals who just want the end result without trying to learn all the complicated photo/video editing techniques.
https://www.newyorker.com/culture/the-weekend-essay/why-ai-i...
Creating elements like that even with Canva's existing tools would generally require a graphic designer or someone with that skillset, or even worse - an agency. All of those options can be prohibitively expensive relative to the benefit they provide.
I am not a "casual." I am a human being.