There was a similar case in Seattle with the South Lake Union Trolley, which was quickly renamed to South Lake Union Streetcar, once T-shirts pointing out the unfortunate acronym started drawing attention. This one is clearly deliberate though.
Changing social norms with time. The dub the dew generation is now starting to actually have some pull and/or be worth pandering to.
The millennials and younger rightfully think every organization and institution is a joke, don't think their words are worth anything, results matter, etc. Since words and names are of low value they don't have a stick up their ass about being SuperSerious(TM) with them like the boomers and older did.
Give it a few years and some place with a name that starts with F will name their transit system FART.
And someone even created a Wikipedia page: https://en.wikipedia.org/wiki/Ride_the_D
It's LA.