Kastro said:
Technically, it doesn't solve any problems but it does come out of nowhere.
I think my bigger problem is that it completely destroys realistic consequences in the show. The result of Walt's actions is just so random and arbitrary that it doesn't really reflect on him at all, it's like a Rube Goldberg machine of moral consequences.
Breaking Bad is hardly 'realistic', but it's about willing suspension of disbelief. I can believe the unusual circumstances of the show, because it's grounded in fairly reasonable things happening. Walt's secret criminal work jeopardises his family life. Okay. That is realistic. Walt's inaction in saving someone's life leads to a plane crash. What?
It means that any action can have more or less any consequence and the decisions of the characters are no longer important.
EDIT:
For the record I'm not a fan of Lost, for similar reasons.
EDIT:
Yes, there's no magic or anything like that, but it's just completely out of left field. They could just as easily say that Jane's father worked for the CDC and held a deadly, highly contagious strain of ebola which he decided to release because he hated the world after Jane died, and then have the bodies in Walt's yard be ebola victims.