[explorigin]

For me it was the lack of confirmation with the backend. When it was the next big thing, it sent changes to the backend without waiting for a response. This made the interface crazy fast but I just couldn't take the risk of the FE being out-of-sync with the backend. I hope they grew out of that model but I never took it serious for that one reason.

[rogerkirkness]

Yeah I built my first startup on Meteor, and the prototype for my second one, but there was so many weird state bugs after it got more complicated that we had to eventually switch back to normal patterns to scale it.