Wiping Israel off the map is never going to be an option. The litmus test that some people want from Democratic nominees is never going to be met.
Boycotting the current Israeli administration = wiping Israel off the map? C'mon man...
Perhaps there are some BDS supporters who are specifically talking about Netanyahu, and would be happy to work with a hypothetical Pro-Peace Israeli government and/or support a two state solution. But the overwhelming majority want to see Israel removed, either via a one state solution or violently expelling the Jews (though I suspect in practise they are the same thing, Yugoslavia proved binational states don’t work).
There’s also very little to gain from supporting Palestine in an election, given that most people’s sympathies in America are with Israel. His campaign probably also saw the fate of Corbyn in the UK and the dangers of being seen as too pally with anti-Semites so they are perhaps overcompensating with this statement (that I’d agree is probably too forcefully pro-Israel).
But the worst case scenario from a Biden presidency for the Palestinians is that he is like Obama/Clinton whereby he pays lip service to the peace cause whilst doing nothing. Bad, but certainly better than Trump who will allow Netanyahu to annex the West Bank settlements with impunity.
