I'm quite surprised by the difference in HN users' (quite positive) reaction to this product compared to quite negative reactions to Ello, posted here a few days ago. Is there a substantial difference in teaching methodology, or other factor that makes Ello unpalatable?

https://news.ycombinator.com/item?id=48852199

Ello is targeted at 5 year olds whereas this is targeted at a broader range. Also the mechanisms are explained much more clearly here.