SITH has lots of problems because it contradicts what Joseph and Oliver taught, not to mention what the scriptures teach.
Nevertheless, M2C scholars and revisionist historians love SITH because it plays into their narrative that scholars are more important than prophets; i.e., Joseph was an ignorant speculator so we need modern scholars to discover Book of Mormon geography and we need modern linguists to discover that the text was actually created in the 16th century and we need modern historians to discover that Joseph and Oliver misled the Saints (and the world) by using the wrong terminology when they described their experiences. All of this "need" for scholars translates into funding and job security.
Today I'm posting some comments from a reader who posts comments on moronisamerica.com. That site compiles this and other blogs, but a lot of people read this blog directly here or on Amazon or other sites that republish it.
Here's the comment. He makes some points that a lot of people ask themselves about SITH.