It's OK if you're already in the right lane queue, but if you have joined half-way round and find it impossible to legitimate enter the correct lane at the indicated point because these lane-panickers won't let you in, then it becomes a problem.
The general rule is, and has always been, that you should drive in the left-most available lane, unless you are actually approaching a lane separation, or are overtaking.
Those who are 'new to the area' won't be the ones doing it, they'll be the ones being blocked out.