Does this annoy anyone else?

TruckOff:
I agree, So many drivers seem unaware that its their responsibility to join the motorway safely, (even if that means them adjusting their speed!)
its not your job to move out to allow them to join.

Exactly, but then when you do you at least expect the courtesy for the vehicle you’ve moved for to allow you safely back in. Not just press their cruise control resume button and forget about anything else that’s going on around them.