If that were true f.lux wouldn't be so significant in my experience. I can't watch TV or use my nintendo switch for very long without suffering from pretty bad eye strain that could evolve into a migraine headache and a night of rough sleep. On my laptop it was the same way too, until I installed f.lux. Same is true for every other device I've been able to install f.lux on.

Agreed. It’s possible the improvement is due solely to a reduction in total light output (which I assume is a side effect of reducing blues) but something about it really seems to help. I still wish my monitor could go dimmer.

It is an anecdote but I also much prefer redshifting all my displays. At this point, it is really uncomfortable to look at a blue screen on someone's phone. If the science isn't finding an effect, they are either not measuring the right thing or they are not measuring it with a large enough sample size.