Let's put this straight: It is not stupid but an actual limitation as the SNES can only show 1024 unique 8x8 tiles for a single background layer but realistically less (Lunar Magic allows 738 unique tiles, not counting global tiles i.e. page 0).
The only solution is to simplify the background instead of putting all the blame towards FuSoYa and Lunar Magic. This has been suggested towards you and, more importantly, it might put you into danger of getting a warning.
Seriously, just follow WYE's advice and use a background from our graphics section, okay? In fact, inserting custom backgrounds is a pretty easy thing to do, it's the creation (which is what you're doing) which is difficult and thus requires some knowledge.
Last note as a moderator: Be wary of your words! Some mod
has already noticed your tone and if you don't calm down, you might end up getting a warning!
Okay, my layout looks ugly.