I just tried it on my MacBook Pro in a perfectly dark bathroom to double-check.
Yes... at minimum brightness #000 isn't pure black, it's a very, very, very dark gray.
But nevertheless -- there's still plenty of contrast. So while it's technically true you get slightly lower contrast... I don't see how, in practice, this would be a problem for anyone who's simply doing reading/writing/coding.
(Remember, many coding themes are intentionally lower-contrast anyways -- black text on white is really dark gray, bright text on dark background is a dark gray background. So it's doubly not a problem.)
Yes... at minimum brightness #000 isn't pure black, it's a very, very, very dark gray.
But nevertheless -- there's still plenty of contrast. So while it's technically true you get slightly lower contrast... I don't see how, in practice, this would be a problem for anyone who's simply doing reading/writing/coding.
(Remember, many coding themes are intentionally lower-contrast anyways -- black text on white is really dark gray, bright text on dark background is a dark gray background. So it's doubly not a problem.)