Earlier quoted context omitted.
And you are now locked down to one environment.
The insistence that every application/framework must be cross-platform, or its worthless, is so bizarre to me. What is even the point of having multiple operating systems if they can't have distinct features to gain competitive advantage by attracting application developers? If operating systems can't differentiate, we might as well all use Windows. Cross-platform applications have their place, but sometimes I like h…
I agree that not every app must be cross-platform. Text editors are a good example. The economics may or may not be more difficult. Yes the audience is smaller but the cost may be lower as well and you may have a competitive edge over cross-platform apps.
The problem with starting a single platform app is that you have to decide very early on that you're not going to need any collaboration/sharing features (unless the app is built on top of some cross-platform protocol or file format) and that you're not going to serve multi-platform users any time soon. This is a big decision with far reaching consequences.
I think there's a risk for developers (and tech bloggers) to become so enamoured with the fine details of their platform of choice that they lose touch with the priorities of the user community.