I think the issue is less forcing DMs who don't like (insert intelligent race here) as a PC to make them one and more forcing DMs who want (insert intelligent race here) to provide a good reason why they are in the setting but not a PC race.
Essentially, the world has changed to a point where simply "they're ugly" they're savage" or "they're exotic" are not convincing reasons for a lot of players anymore.
"It's not that we are trying to force DMs to put in races that the DM doesn't want to have, it's that when a player hears, 'No,' that's really means that we get to examine the reasons that the DM says no, and find them wanting, so that the DM is forced to put in the race that the DM doesn't want to have."