Agreed. If you're going to support font resizing it should be throughout the UI. Even the settings should be impacted by font resize.
Rekordbox DJ 5 font sizes are too small
I'm compelled to add my voice to the chorus here and let you know that the small font sizes and low contrast font colors used in the control areas (the upper half as opposed to the playlist area below) of Rekordbox DJ 5 make it unusable. Consider that this UI needs to be legible from a distance, i.e. across a controller or mixer/decks and that it’s simply unprofessional to have one's nose an inch from the laptop screen throughout the entirety a performance. Please prioritize a fix for this because until then I have no choice but to continue to use v4.
Thanks for your attention,