It still activates but that's when it's at its very worst. If you drive A and B roads over 30mph (which is 90% of my local network) then you will develop the habit of turning it off every time you start the engine. As others have said it's not a very hard pull but it's completely unpredictable and unreliable, if you have a light touch on the wheel it's very unnerving to have to wheel suddenly jerk you towards the middle line as you take a fast sweeping right hand bend.
Then there are the obvious bugs in the software, you are holding the wheel and already driving in the middle of the lane but it starts binging at you to 'take the wheel' or 'drive in the lane'. These are annoying but then, just occasionally, if you approach the edge of the lane it pulls the wheel towards it, rather than away - which at just the wrong moment feels like the car is trying to kill you.