In my work I encounter quite a few people beating their heads against walls trying to make the machine "conform to what they want".

You can often achieve your goals much more quickly by using tools they way they best support being used.

And often there is a middleground. In this case one could write a script that outputs a reformatted file with one sentence per line. In Vim this could even be a simple macro as the editor already has a key for jumping to the next sentence.