Sorry for the slow reply.
For me I would want to be able to turn it off.
To restart the scroll I have to Right click on the time line this then opens the markers menu so I have to left to get rid of the menu.
For example if I was wanting to add a few notes or crash hits through a drum session I would want to just hit play and drop them in as it plays along but if the screens not scrolling then I have to do the process above for each hit.
I have always just hit play on my transport if it was going too fast and then play again to start this is a lot quicker than the way it is now.