An ultra-wide lens used very close to people exaggerates perspective and foreshortening, which can make images feel surreal, energetic, or intentionally different from more conventional street photos. That can be a valid artistic choice if the goal is expressive, unusual, or caricature-like imagery.

But most photographers would not consider heavily distorted close-up images to be straight documentary photography. Documentary work generally aims to show people and events in a way that feels faithful to how they appeared, and getting extremely close with an ultra-wide can both distort subjects unrealistically and affect their behavior or expression.

So yes, this approach can be accepted as street photography in an artistic sense, but it is usually better described as expressive, stylized, or impressionistic street work rather than pure documentary. Ultra-wide lenses are more commonly used in documentary contexts to include more of a scene, crowd, or environment, not to strongly distort faces or bodies.