I hope blizzard enables mounting everywhere because there’s no reason to not allow mounting in the restricted areas. Even the brontosaurus mounts could be stacked upon each other a couple times, so there is no question about space limit here.
If blizzard is so afraid of mounts blocking for access to NPCs - why not give each important NPC a 5 yard radius no-mount zone instead?
The current situation will make Shadowlands a very tedious expansion for everyone using Oribos.