It's only rude if no-one else is doing it (i.e. you're speeding ahead of everyone merging early). If everyone stays in their lane until the merge point, no-one's zooming ahead, so it stays fair.
It's only rude if no-one else is doing it (i.e. you're speeding ahead of everyone merging early). If everyone stays in their lane until the merge point, no-one's zooming ahead, so it stays fair.