This technology is hyped up as something mystical, but it's actually ordinary.
Tips
history
The pattern '神之又神' ('divine upon divine') traces to 《庄子·天地》. The idiom doubles 神 with the classical particle 乎其 in the middle — literally 'divine in its divinity.'
usage
Can be genuine admiration or, more often, sarcasm about overblown hype.