WHAT?? Can I ask where your getting this from? My own personal experience says something way different than what your stating above. I do aquarium maintenance and install for a living and I cannot begin to tell you how many tanks I have that are full of acros that are super healthy and colorful and ALL are grown under Radions. Weve got videos from Jake Adams on Reef Builders of some of these said tanks for those that would like to take a peek.
I then turn my focus to the beautiful SPS dominate tank sitting behind me at my house. 60 gallons of ultimate SPS glory, all grown from nubs under a single gen3 radion xr30 pro, and trust my, only the goods go in my tank. Ive got rainbow millis, ive got WD tenuis, Ive got frankenberry tenuis, red dragon, red planet, tierra del fuego, JF Firecracker, WTF tenuis, purple monster, pearlberry, mother of pearl, just to name a few of the high end acropora currently being grown under LEDs.
I guess Im just wondering how you can sit there and tell another member outright that acros dont do well under LEDs, becuase that is a completely false statement to say the least.