My K1 has one font. I think some folks head would have exploded at those "options.
Since my main issue with reading paperbacks at the time was tiny fonts and text often turning into the spines, it made it possible for me to read again.
I assume that font on the K1 is also caecilia.
What baffles me most though is someone making statements about a font and device they actually never had, never read on one and trying to tell me the font is bad to read on. Yet I read on it since 2008 and I read 100's a books a year.
I never fiddled with any of my devices, rooting or otherwise so I always had available what is on it.