No show is singled out for examples of supposed subtle foreshadowing more than Breaking Bad, but it was actually written largely using a method you could call backshadowing or backmining.
If anything it makes me admire them more, demonstrating the ability to broaden a universe from within, to create something out of nothing.
This doesn’t take anything away from Vince or other showrunners; it’s just a different skill.
They’re mostly enjoyed in retrospect, little seemingly unimportant objects or dialogue lines being tucked away nonchalantly, in spite of the fact they actually signal a major plot point to come.