Nothing clusterfuck about this.
If some reader has such a dumb mind that he cannot understand something that even a 8-year old children can be explained to, then I do not know if it's the comic's fault. It goes like this, watch me:
"So, listen up. There is Uncanny X-Men, which is the book that deals with all the important stories going on in Utopia, the island all the X-Men live on right now. Also, there is a second team in the island, often commanded/leaded by Rogue, that is what X-Men Legacy is for. There are mutants who currently do not live in Utopia, they are currently a private investigation agency under the name of X-Factor. Because this is a huge group, there is also a few other groups, often focusing on one individual like Wolverine or X-23, but we also have 2 different kind of books, namely: Uncanny X-Force for a stealth and deadly killing squad, and New Mutants for a specific, younger kind of mutants".
There you go. Nothing off-putting or confusing.
If you really wanna "mess" with people, you can count in alternate realities or X-Men where it is a fresstyle about which group to include and what to happen. Or the Hope sheningans. But mainly, it is not hard to know what X-Books are there, and what you might like or not.