There is the idea that R6RS is too large and several people have the view that this makes it bad. Those thusly against R6RS incorrectly ascribe a view to those in favor of R6RS: "it is so large, these people who like R6RS must like large languages!"
This is the misunderstanding.
R7RS is split in a small and large because then it should please those who want a small language and also those who want a large language. But those people who want a large language are merely windmills. People in favor of R6RS like it for other reasons.
This misunderstanding is why there is an R7RS-large effort. Do your own research if you don't believe me.
(I hope this was clear and that nobody feels agitated. This anon has nothing against R7RS-large)