It's a fiction or maybe an oxymoron, IMO. Either way, I see it as a useless concept.In your noble and esteemed opinion, what is "enlightenment"*?
If we take "enlightenment" to describe a sort of spiritual, supernatural or mystical knowledge, and knowledge to be justified true belief, then it doesn't exist.
The "spiritual, supernatural or mystical" part is the problem: these terms describe the unfalsifiable, and therefore they're useless as justifications for a position.
If knowledge is justified, then it's based on something not spiritual... and therefore wouldn't count as "enlightenment." If it's based on something spiritual, then it's not justified... and therefore wouldn't count as "enlightenment" either.