Unanswered questions

[Esquilax]

Some plants do better in almost twice the current intensity of sunlight than we currently get. Not just for a little while, but these plant can live extended lifecycles in this 2x sunlight. Again how is that possiable. How can a plant so over develop it photo reactive cells to the point where they can process twice the energy as everything else on the planet, but have Never been in a place, time or condition to have naturally (Bazillions of years appearently) these cells that will Never be used?

Because being able to overperform is leagues better than having to deal with underperformance?

Hell, more than that, evolution doesn't have a mind or anything, it's not specifically searching to maximize performance based upon the current environment. Traits that do that will definitely be inherited assuming nothing big happens, but the actual process is far, far messier than your gross oversimplification of it.

These plants, for one, may have come by a photosynthetic mutation that allows them to absorb more sunlight than they need to, but because that mutation doesn't do any outright harm, it's allowed to persist despite serving no function. Since evolution has no framework that it's working within, the things it produces might seem nonsensical to you, but so long as there isn't a distinct disadvantage to them, there's no reason for them to stop existing. It's the same reason we have appendixes, or facial hair, on any number of useless traits; they aren't killing us, so there's no pressure on them to be bred out.

Also, versatility isn't a bad thing; sure these plants aren't using that extra photosensitivity now, but they have a distinct advantage in situations where sunlight is elevated. For all we know, in a couple million years time those plants might be the only ones still extant because they were the ones that could cope with some weird solar disaster.