I appreciate the logical, cool-headed responses and the lack of profanity displayed by our community.
Characters or creatures that use spell-like abilities or invocations never learn the arcane circumlocutions of logic and mental training necessary for advanced spellcasting. As such, requirements for feats and prestige classes based on specific levels of spells cast (“Able to cast 3rd-level arcane spells,” for example) cannot be met by spell-like abilities or invocations—not even spell-like abilities or invocations that allow a character to use a specific arcane spell of the appropriate level or higher.