Actually kind of surprising that they're around 28KB. But the TLDR is "almost 90% of the size of the binary, is indeed extra libraries/elf metadata." and also

Actually kind of surprising that they're around 28KB. But the TLDR is "almost 90% of the size of the binary, is indeed extra libraries/elf metadata." and also that the executables are rarely used because true and false are shell built-ins.