See while technically that is true it is also not true.
People focus to much on the light spectrum of chlorophyll for corals. We focus so much on par but it is the spectrum outside of par that causes allot of the colors in corals especially red and UV. This is why LEDs fail for so many with sps corals, they run them way too blue.
This really only affects mainly shallow water corals which are allot of the sps kept in the hobby come from. The corals from shallow water are bombarded all day with UV, green, red, yellow etc spectrum's of light. These shallow water corals have overtime built up UV and color blocking proteins and pigments. They also have proteins and pigments that change the colors of light to more useful ones. These pigments and proteins are what cause the color in sps.
Spectrum of light like red are actually bad for corals and has been proven.. But that is why corals can block it.
People like the blue pop but for allot of sps this will cause them too loose colors if you turn down the other spectrum's of light.
You have to ask why the rush to add UV spectrum in leds?