Hold on, what part of my manœuvrer "makes them speed more", exactly? Is the option not to pull back behind not there?
I have not suggested I "don't let them get passed", let alone what speed I am happy to accelerate to (in all fairness it could be as little as 1mph over the national limit, or 100mph over).
Mentally ill? This is becoming quite insulting. I'd rather you stop with that if you would be so kind.
Well the part where you speed up. They can either try and complete the overtake, so they can continue their journey away from the sort of idiot that drives dangerously like you, or give up and remain in proximity to you and your dangerous driving.
I know i'd rather vacate the same road space if at all possible.
I don't give a toss how insulted you feel, you are a dangerous driver and deserve every single bit of derision and insulting language you are on the receiving end of.
It genuinely wouldn't surprise me if you were mentally ill though, when you break down the situation logically.
Scenario 1: Person goes to overtake you at above the speed limit. You let them do so and they complete the overtake and drive off into the distance. The entire situation is over in a matter of a few seconds, the 'dangerous situation' has passed and the driver driving in a manner you disapprove of has now driven away down the road and well away from being in a position to cause you any harm at all.
Scenario 2: Person goes to overtake you at above the speed limit. You are annoyed by this as you don't like people driving above the speed limit. Your first response is accelerate to beyond the speed limit yourself. This causes the overtaker to drop back and stay behind you, leaving you remaining in close proximity to someone you deem to drive dangerously who you have more than likely just aggravated significantly.
Scenario 3: Person goes to overtake you at above the speed limit. You are annoyed by this as you don't like people driving above the speed limit. Your first response is accelerate to beyond the speed limit yourself. This causes the overtaker to increase their speed still further, exacerbating the 'dangerous' nature of the behaviour that annoyed you to start with. The overtaking move now takes far longer than before and at much higher speed than was necessary, putting everyone in significantly more danger than would have been the case if you hadn't accelerated.
At what point options 2 or 3 ever seem like the best response I have no idea, and I can't think why any sensible, normal, well adjusted driver would choose to take that course of action.
It is dangerous driving and you are a dangerous driver. Maybe one day that will sink in.