As I said in IRC, regardless of the outcome, the LA call was way too early.
But how do you conclude that? They call it when they're confident someone will win, not when they're confident it won't tighten significantly. They know what they're doing.
Let's dispel the fiction that the news media know what they're doing. They have no idea what they're doing.
The stats people working behind the scenes on election nights do know what they're doing, and it's validated by the fact that their calls are virtually never wrong, even when people debate on here that this that or the other call may be premature.
Not sure why you're so invested here. But since network calls are usually made on a combination of exit polls and early data, and in this case there were no exit polls and the early vote turned out not to be matched by same-day voting.
Considering they didn't call KY which had a bigger margin in the end, calling LA without waiting to see how the real data was flowing was a mistake, IMO.