Well, since World of Color saw fit to have zero connective tissue for its random Disney-clip segments, I don't see why DCA should bother having such connections between a "this is all we have open in evenings" zone and where the show takes place.
I'm not necessarily knocking WoC, btw, for having no connections. Most fireworks shows in the history of Disneyland have been a random assembly of Disney songs set to pyro ("Remember" being the lone and notable exception).
Seeing that they wanted to offer something fun (check) and perhaps (though likely I'm giving them too much credit) synergistically rainbow color-themed (check), and seeing that the Backlot is currently the only dead-end street in the park, I think it's the perfect thing in the perfect location.
Assuming they want to have something fun IN the park while everything else is closed, where else might they have put GLOWFest
inside DCA??
I have to also assume it looks just tacky awful during the day when it's supposed to just be the Hollywood street - - but at night I think the theme of pseudo-rave works quite nicely on a Hollywood street. I think a generic street (e.g., Downtown Disney) would be a tad more boring, and a tent unacceptably boring.
It may not be your cup of tea, and perhaps the alcohol service being 3 levels more prevalent than in the rest of DCA rubs you understandably the wrong way (
i.e., rubbing alcohol) - - but just go and enjoy your inner perv.
Cute raver boys all high on dope await your perving delights. (
I perv on cute boys everywhere in Disney, why should it be a problem if, for a while, a bunch of them are conveniently grouped, as long as there's no grope?)