WBUR interview about Hawaiian on Duolingo "You Can Now Learn Hawaii's Native Language Using An App"
"...When we're thinking about the app, we're looking at, what's most important to people? What do they what to talk about? Because we're not trying to teach them grammar, and get really detailed in the language..."
I've seen this we're-not-teaching-grammar claim about Duolingo years before too, not just about Duolingo teaching Hawaiian.
What do they think "grammar" means?
Seems to me that if you're teaching someone how to put words together to form a sentence, you're teaching grammar, even if you're not using all the technical jargon for grammar.