Seems to be a tendency for people nowadays to rely on the aircraft for information which is freely available elsewhere.
Having done your take-off calculations you know roughly how fast you will be going at various points down the runway and you know how your own mount usually accelerates. If it's not accelerating as quickly as it should be you'll notice and check the ENGINE parameters surely.
And you know the distance you need so if you're not close to V1 at a certain point on the runway then you know there's something wrong.
I don't deny that the wind velocity may be a useful piece of information but how many pieces of useful information do you need or have time to process.