"God is dead" is beyond passé in the 2020s, but in the 19th century nobody really needed a "god of the gaps." If a Friedrich Nietzsche equivalent was active today, and let's just say was convinced that AGI was possible, I kind of wonder what generally accepted grand narrative he'd declare dead beyond just human exceptionalism. Philosophy itself?
Philosophy is already a self-destroying enterprise (it lets you think out to the limits of thought). Eugene Thacker's "The Horror of Philosophy" series is probably the best thorough explanation of this.