Amazing and I am also a fan of suckless.org.
I am using dwm, dmenu, sic and st now.
The binary size of st, rxvt and xterm are 184k, 2.7M and 640k (on x86_64 arch, not accurate). What's wrong with rxvt's binary size? st's binary size is not so small compared to its LOC.
The suckless community are die hard fans of the good old UNIX and C. They only release projects written in C and RC(a bourne shell clone ported from plan9).
xterm 64K LOC rxvt 32K LOC st 3K LOC
(these numbers ain't precise)