If Trump only flips GA, AZ, and NV, he gets to 268. So, what about NE 2? Could he win that also?
I think it's far more realistic for him to go after one of the big Midwestern battlegrounds. The newly redrawn NE-02 was already 3 to 5 points more Democratic than each of those states in 2020, and is almost certainly trending D much faster than all of them.
In fact, I'd put more effort into NM, ME-AL, and maybe even MN if I were Team Trump.
It's also only one electoral vote
And only leads to a tie in the scenario he wins it but loses the midwestern states. It's possible he wins it but I suspect he wins the 3 midwestern battlegrounds before taking back NE-2.
To the question whether it is safe... obviously no. But if the Biden team and supporters want to be overconfident going in election cycle, be my guest.