As a Yasuo main with 110k+ mastery points, you can in fact be punished VERY hard for using the Wind Wall late. In fact, you can get punished for using it at all.
A lot of times, people get intimidated by it (I have no idea why, it's absolutely ridiculous) and back away when you Wind Wall.
However, sometimes, people use it against you. A Yasuo v Yasuo is a good example. I'll explain.
When in a 1v1 Yasuo scenario, your Wind Wall usage is crucial to your dominance. If you use it incorrectly at all, you get punished so severely that you can die extremely quickly (because come on, it's Yasuo). Essentially, you want to play extremely aggressive where you can, and play safe when you're not being aggressive. E>Qing past the enemy Yasuo's W while your Gathering Storm (3rd Q stack) is up and ulting is good to punish the opponent, and missing your W when the Yasuo throws his Gathering Storm basically ends up in you dying 60% of the time.