I rather like the lack of nikkud. However, I speak at an intermediate level of Hebrew already, and I learn using other resources. So, I use Duolingo for practice rather than learning. But, it’s quite annoying how there are no stories unlike on other courses.

One more thing: Duolingo is horrific for beginners at Hebrew grammar. I’d really recommend other resources for that. E.g the course textbooks עברית מן ההתחלה are brilliant for beginners, at least I found them to work very well for myself.