When have you ever heard of anyone discussing "Finnish cuisine"? When have you ever heard of there being a Finnish restaurant somewhere outside of Finland? I'm sure a couple exist, but most are probably "Nordic" and I'll genuinely be surprised if you find one that's a "traditional Finnish food" restaurant in another country.
I mean it's peasant food. Simple, fulfilling and imo pretty good for what it is. Karelian stew being a good example, though I've never actually had it as plain as you described.
Traditional Finnish cuisine isn't anything fancy but it's not really supposed to be either. And I don't mind, I like it.
An article about Finnish cuisine exists. Because as a concept, we can talk about it.
But in the sense of there being restaurants for it, like Italian, Mexican, Greek, Indian, Chinese, etc cuisines, I would bet quite a lot that you can't find one single restaurant dedicated to "Finnish cuisine" outside of Finland.
It's just that that's not how cuisine is usually understood. But like I said, I wasn't trying to change your opinion, just noted that as usually defined it does exist.