Hey Gracie,
it's not fungal. The plant does look in good shape.
One could argue that the spots are a sign of stress and trying to reduce the spotting might help but it's not a confirmed thing or anything.
Sometimes plants will get stressed from a poor substrtate, bad roots, pests, cold stress, transport stress, and change in environment. Howver other factors like water ph and the water quality can have an effect too.
Too much light can be a cause of pigmentation to develop on the leaves and yes reducing the light would reduce the visible pigmentation but the plants need light to grow.
Yours is imo not displaying signs of too much light so I'd leave the light. Although reducing the light will reduce the spots you want the light to get it to flower.
So think about the overall care, temps, water quality, substrate, watering frequency.
Are you familiar with how to fertilize orchids? They need a weak concentration regularly to keep them healthy but not so much to cause damage. It's a very fine balance, they just need some but not too much and not none at all.
Hope that helps. If you are unsure of the ph or water quality just stick to using rain water. That is what they get in nature.
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