No, as I said, the majority of the light at 10’ is blue (but in context I was mostly referring to the red/yellow light the OP was asking about). And reefs absolutely look blue when you go diving/snorkeling. When you see photos of reefs that don’t look washed out and blue, it’s because they’re using a flash or artificial lighting, but I can assure you, if you go diving everything looks washed out and blue.Actually at 10 meters down on a sunny day theres a ton of white light. Sandbed looks white not blue, coral grow in this light. Hell on the great barrier reef there's sps poking out the surface in places. The blue light look is not how the reefs look in the wild.
I agree with you that the super blue look that a lot of people have on their tanks doesn’t look natural, it’s a simulation/exaggeration of the kind of light that corals would be getting at 5-50 meters of depth only in 1’-3’ of depth. And as I said, some corals from shallower water do better under whiter light, but baring some acropora species, a few other SPS species, and a few soft coral species, the majority of the corals we keep come from 10-30 meter depths, and they have evolved to utilize light in the blue spectrum (400-550nm).