• My reason is not the font, which I like, but the 'density' (not information density). The line height is too less for me.
• There are a lot of hyperlinks and they look like the factorial notation instead of an underline and are of the same color as normal text.
• Sidenotes are a good thing but they should be shown on demand, not everytime (maybe there's a setting I missed which does this).
• Regarding the pop-ins, I dig the idea but IMO, showing the whole page is not very useful. Maybe just the summary of what's to be shown. Why would I want to read a whole article in the pop-ins and what purpose do they serve which sidenotes don't?