If I may, I think both of you are in the wrong here.
@Rafs Saying "if you don't like it, shut up and go make your own" is utterly useless hyperbole. It the kind of mindset that you see all over the most toxic open source projects and needs to stop.
@Rohan Sampat (Rom4ster) Your reaction is not the same as complaining about bad food. In your own words you quite like the framework, but ran into a situation where a particular component is not yet available on all platforms, so you came to the public slack, created an offensive account (name and tag), and started screaming in the most public channel at the top of your lungs about how awful this whole * system is. That's more along the lines of going to a restaurant, enjoying your meal, then finding out this particular location doesn't happen to have Dr. Pepper, so you run into the kitchen, grab the cooking staff, drag them onto the restaurant floor, and proceed to scream at them and berate them in front of everyone, using the most fowl language you can muster.
That's how I see it at least. If I'm off the mark (for either of you) I apologize.