I think some of the error and frustration in SE has to do with too much segmentation. It started well, but as technology morphed and matured, what was a significant difference in the past was no longer as meaningful.
For instance, Superuser, where I’ve spent the majority of my time and effort considers questions about Web Apps off topic, but for Google Docs most who use it are expecting it to replace real desktop applications which are entirely on topic there, while GDocs is off topic.
I’m not sure if there is a strong argument to be made for such delineation now as many web sites behave like applications.
At the same time, web applications such as WordPress are not like local software and really share much more in their use and management with the work of a webmaster.
Topics like Android and IOS are categories unlikely to ever merge, but again, at the same time, certain of the issues are generic to Mobile, and common across these platforms.
Questions about servers and enterprise applications and systems are generally seperate from issues by home users, but again, software is software and hardware is hardware, and much between these is shared.
How to draw these lines, or whether to draw them at all, I simply cannot say, but I do believe that broader categories will result in removing much of the frustration of the massive selection of SE sites with their confusing or even competing topics, and will be more applicable going forward as technology continues to change.