The thing is, in this context "editing text" is seen as the one job, that one tool should do.

So when you're working with multiple applications, all of which are trying to force you to use their own way of editing text, it feels highly fragmented and un-unixy

I do understand what you're saying, it's just that I wish the text editing portion of most of these tools is abstracted to a degree that allows for my text-editing tool of choice to be used within it