Contrary to popular belief among the general population the majority of furry art is not mature even on FA, I just made a simple search of the two most popular species in the fandom: the wolf and the fox, I searched them both at first without filtering and I came up with the results fox(119,000 results) and wolf (134,000 results) and then I did it again putting the mature filter on so only showing clean art and the results were fox(88,000 results) and wolf (103,000) so I divided the two numbers with the other two and approximately 26% of fox art is mature and approximately 23% of wolf art is mature on FA. So between the two on average about a quarter of art submitted on FA is mature, therefore meaning that the other three quarters of the art on FA is clean or okay for most people. So proving that yiff is not as big in the fandom as people want to believe even though it is a significant portion about 1 in every 4 artworks submitted here on average even though it can vary widely depending on what your searching. So that's my experiment and tell me what you think.
(Note: Even though I myself do favorite mature art, I wouldn't draw it myself and I see it as a bad habit of mine, that I will eventually either reduce the number of mature favorites or quit it all together maybe sometime later on.)