Ukulele is still cool to me even though Train came out with "Hey Soul Sister" and Tiny Tim existed. Any underground scene that wants greater recognition and gets it is inevitably going to have to weather this storm.
Edit: Also, what is "lazy vocals"? The average vocals I've heard in chiptune weren't any less lazy than anything in a comparable mainstream pop/rock/metal/hip-hop song. Subject matter is pretty much the same, melodic style is pretty standard. Being able to hold a note for more than 0.5s without having to do intense meditation =/= laziness.
Edit edit: Also, of course there are shining exceptions to the standard in all cases.