Most of the horror stories are exaggerated. It depends on your definition of "safe". Uniden has a program to fix all the hardware issues, so if something should happen there is a fix, so you should be safe in that you won't get stuck with a bad unit that you can't get fixed.
But, it will never really be a guarantee as to when your model was built, and could be an older model when you purchase from a dealer or distributor.. There is still no official word that production has changed to the newer parts. There are claims that any unit made in 2015 has the new parts (in another RR thread), but I would say that is nearly impossible. As I mentioned, there is no word from Uniden yet as to the changeover. But, they will surely change over at some point if they have not already.
There will likely be older stock in some dealers for years to come.
This is likely as accurate of an answer as you will get unless UPMan comments (and it's possible he does not even know, as production is handled overseas).