It’s not the ‘angry paladin’ trope I refer to, those exist even to today. Throughout my RP tenure I have had run into individuals where conversations and actions have taken place where they are exact word for word, dialogue virtually lifted from Lothraxxion and the Lightblind paladins bosses.
Of course, the owners of those characters never used the word ‘Lightblind’ because the word just wasn’t coined and they never explicitly stated “the Light did it via magical influence’“.
But me knowing those characters they pretty much fit the Lightblind conditions of 1) completely infused by the Light, 2) not insane on everything but 3) the moment the void or anything dark is brought up it is like the gear shifts and those characters and legit there has been RP where they forgo the well being of every friendly character in the vicinity just so they can ‘banish the void’. And if anyone spoke up against them it is literally, word for word, “you have been blinded by the void”, “it MUST be purged”, “you make excuses for your friend’s misdeeds (said friend did nothing but beyond being a shadow priest”.
The only thing they did not display, is the momentarily ‘awakening’ you see in the three lightblind bosses where they showed signs of mental fatigue of “what is happening to me?!” before doubling down - they just go straight to doubling down.
It is amazing for me to see it now put down canonically years later.
If you want actual lore-wise examples we’ve had them as Nazgul said.
When you do the Legion campaign you see hints of it where the high anchorite of the LIghtforged army openly says she would much prefer killing demons than saving her allies but since orders were orders, oh well. Which already sounds… quite morally questionable.
And then you have the draenei on AU Draenor for the Mag’har allies race where you actually see normal captured prisoners suddenly being infused by the Light and BOOM - all turned into mind controlled drones that literally is the reason why Mag’har came to Azeroth.
They called those “Lightbound”, but on an execution level it’s… Lothraxxion but orcs and draenei.
So this isn’t a new concept. Blizzard just pulled it from the side lane, dumped it into main street and gave it a polish.
In terms of current RP, there has already been a few cases of Lightblinded individuals causing damage in Stormwind City and had to be taken in/remedied/cured. So it’s there already. BUT, not that common (yet?)