Notation software was not originally intended to be a composition tool. The idea was that you’d do your composing on paper, and then transcribe your handwritten scores into the computer afterwards. All of the affordances of Finale, Sibelius and the like are informed by that assumption. For example, you have to enter the notes in each measure in order from left to right. If you’re copying from an existing score, that makes sense. If you’re composing, however, it’s a serious obstacle. I can’t speak for all composers, but I’m most likely to start at the end of the bar and work backwards. If I want to put a note on the last sixteenth note of the bar in the MIDI piano roll, I just click the mouse on that beat and I’m done. Notation software requires me to first calculate the combination of rests that’s fifteen sixteenth notes long. I’m told that Dorico has finally addressed this, and lets you place your notes wherever you want. Noteflight, however, follows the model of Finale and Sibelius.
This is a super fascinating explanation of the way modern students are learning to create music on a screen. And I can vouch for Dorico that yes, it deals with note input in a non-linear way, much the same way a MIDI editor functions.