Just because a study finds that some cause, on average, has some effect, I don’t think it is correct to start believing that that cause and effect will hold for you or any else in particular.

Where did I say this at all? This is a straw man. The original comment stated, without any evidence at all, that noisy, chaotic environments aren't necessarily worse. I stated, with evidence, that it has been shown to have a negative effect on average. No where does this preclude that it may help some people or have no effect on some people.