Israel was going to be armed either way, this is decades long u.s. policy and nobody was going to change that.
The choice was between a liberal candidate that's at least nominally interested in good outcomes for Gaza and a candidate that's openly hostile to Gaza, the same candidate that recognized Jerusalem as the capital of Israel and enacted a total ban on Muslim immigrants in the u.s.
Now, Trump is openly proposing ethnic cleansing so he can build hotels in Gaza. People who equivocate on lesser-of-two-evils are those who simply don't care about real outcomes.