This doesn't sooth my concerns. Why should it, when it's literally them switching to a subscription model. Nothing in the article says otherwise. Do we believe they'll build the infrastructure to support a SaaS, then turn it all off after this 6-month trial? It's not just for fun, they're clearly going to make it the primary way of paying for their products.
I bought all the Affinity apps (multiple versions) because I was specifically trying to escape Adobe Creative Cloud. Their software may not be as good as Adobe's, but Affinity's business model provided enough value on its own. I'm making some assumptions here, but come on, we know how this story usually plays out. Unless I'm wrong, I think this is probably a bad idea for users like me.