For the non designer.
Yeah exactly this, I don't think they aim to bash designers saying we only are professionals because we have expensive software, moreso I think they aim to target small business owners or entrepreneurs who don't have as much of a creative background and just need a free solution for small graphics (posters, business cards, facebook banners).
They're using it in coffee shops!
So you know it's good
There is a big difference between designing and decorating.
Looks like they intend on using assets from 'real' designers with commisions: https://www.canva.com/designers