I blame font sizes.
I think everyone but me is wrong and that my phone in portrait mode should be able to show at least 100 characters. The comment im replying takes up about an inch of vertical space, and is spread over six lines, one of which is blank and one is a single word.
This is larger than I find ideal but about the same as an average paperback novel. That said I need to twiddle a setting in Android developer options to get even this small. Maybe people want to loom at their phone without their glasses on? maybe less text seems "cleaner"?
This is my hill and I'll gladly die on it.