He wasn't.
You can't see the biophotons.
Humans have no way of detecting, experiencing them, without complex instruments.
They do not factor in to any decision making activity in our brain, because we have no senses capable of receiving them as input.
Read your own source.
The way that people colloquially use 'aura' is as if they have some kind of magical ability to see things other people can't, that indicate things about that aura-haver's emotional or mental or spiritual state.
They can't, biophotons do none of that, they're just a nearly undetectable form of light that's emmitted by essentially anything that has an active metabolism, ie, is not dead.
They're just using a made-up concept to describe internal herusitics in their mind, ie, their intuition.
Sure, they've used their mind in the way that your last two sources sort of hint at, but its a delusion, its failing to understand their own mind giving rise to a psuedo religious concept.
The only reality, the only power in 'auras' as a concept is sociological, indirect, as a reference with no referent.
Auras being a thing be people can see and use... that's on the same level of 'real' as 'Christ died for our sins'.
If you mean to use a different definition of aura, as in just a glow of light, then sure, technically all living matter has an imperceptible aura.
Could these UPEs play some kind of way into extremely short distance cellular interactions? Yes!
But thats... not what people mean, 95% of the time, when they're talking about a person's aura.
This is the whole problem of using woo woo terms.
You can't conflate two different meanings of words and then act like that is not what you are doing.
You also should specify what you mean, in cases where a word has different meanings in different domains.