I guess I agree with all the nostalgia for HL1... but what constitutes a golden age, exactly? Tremendous output? Consolidated communities? 3 Great People in the same city? I think the amount of maps being made overal is roughly the same, maybe more since anyone can just double-click "Source SDK" and get started.
The scene is more fragmented -- Mapcore, Interlopers, TWHL, Mapping-Area, etc... and some of the big ones kind of floundered, like Snarkpit, Wavelength, VERC... Don't know what's up with HL2world these days...
Anyway, who's to say in 5 years we won't be saying, "remember how great MapCore used to be, with that Door Challenge and stuff?"