Is this how DPI scaling in X11 works? Also, don't you get the same effect (readable large fonts but alignment changes a bit) when you increase the size of your

Is this how DPI scaling in X11 works? Also, don't you get the same effect (readable large fonts but alignment changes a bit) when you increase the size of your UI fonts, even without changing overall UI scaling? Why are people (apparently) so attached to pixel alignments for OS-native GUIs?