Comparing Tahoe to Windows 7 is hyperbolic. 7 had Media Player, 8 had Groove Music. 7 was welcomed as a feature-rich upgrade, 8 was boycotted as a user-hostile downgrade.

I don't know what school of contemporary design you hail from, but you can't piss on my back and tell me it's raining. Liquid Glass needs an 8.1 update, at the very least.