Why Aren't White LEDs In Cameras More Popular?

For video cameras, why aren't white (visible) LEDs more common?

Most cameras that feature integrated LEDs use IR wavelengths, ie:

Uncommon examples of white LEDs in cameras can be found, typically in consumer grade models like this Axis cube:

However, adding light fixtures / using external white light illuminators is fairly commonplace.

Why isn't using integrated white LEDs more common? Should they be?

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