It is never arbitrarily stated that this is a thing randomly.
BG3 on the other hand arbitrarily states many thing, but then shows the complete opposite.
It states (out of the blue, in violation to all D&D lore) that mind flayer think so much above any mortals that only they can mentally match the netherbrain (for reasons). But then it shows mind flayer that can easily be tricked into believing that you are on its side and masterminds that can do nothing to prevent you getting the hammer and freeing Orpheus, the hight of his manipulative power being "going shirtless", while his fallback plan is "surrender to brain".
(Speaking of hammer, it states that only the hammer can free Orpheus but then shows some random Gith being technically able to free him by punching the chains)
It states that the tadpoles are super dangerous, slowly eating your brain with you losing part of yourself every time you give in to its power. It then makes them a completely harmless powerup system with no negative effects which is completely under your control.
It states that returning to life is a complicated and noteworthy issue, including having a necromancer performing experiments to figuring it out and the whole overall plot in act 2 having the root cause of returning a person to life.
Then it makes death completely trivial to you by giving you huge stacks of revivify raise dead and even a true ressurection scrolls which function a lot better than what the spell normally does and giving you a sidekick that performs the most powerful form of ressurection for pocket change with no one making a comment about that. But both only works as long as it wouldn't inconvenience the plot.
