So... He attended the show and all he took home from it was an article about gimmicks and the freebies he scored and this sensationalist piece of junk about booth babes... Sounds like he was just there scabbing freebies on a company funded junket in Vegas.
This guy is clearly just an attention seeker trying to fire up the feminists... the girls shown are hardly your typical "booth babes" and his claim that the "Solar VPS" booth was bro-centric (I assume he is talking about the "spacemen") shows he hasn't even bothered to look at the companies marketing materials or website to see the space / solar system theme of all their products and services.
And yes a lot of trade-show organisers in certain regions and industries have cracked down / set guidelines on booth babes, but this wasn't due to changing sensibilities but rather a response to vendors who were really pushing the limits of existing ones with things like body painted models and models wearing miniskirts that should probably be classified as belts.