While I do understand this notion, it is (out of my humble perspective) not at all comparable.
Yes - gin has been really exploited in marketing (like vodka) - but it is really like any mainstream trend. Vodka has been always a bit different: while a lot of gins have significant differences (especially due to their different botanicals) - quality vodkas lack the big differences and their subtle differences are subdued within the different moods people are in - or what they have eaten for breakfast or lunch, or if they had one drink before or simply with the mixers, the vodka is consumed with.

Anyway - one big topic I have contemplated about is Old Tom Gin. In my eyes, this style has been largely misrepresented and misunderstood.