You're probably right. I am not too concerned and see it is a very beneficial thing, plus love the look!I think the myth of Sunlight causes algae was from days gone where we never really understood Phos, Nitrate levels, etc.
I to get the afternoon sun streaming onto the face of the tank and it does add a "natural" look to every we can't replicate.
As long as you have good husbandry skills, appropriate stockist, etc can't see why this would be an issue these days. Also, who does it better than Mother Nature?