proposing. It isn't a surrender to the abuse of power article. Here is a comprehensive analysis, just out this morning:
No, Trump Defense Lawyer Alan Dershowitz Is Not Conceding Abuse Of Power
"Alan Dershowitz is not conceding that Trump abused power. He is arguing in the alternative, a technique with big risks, but potentially big rewards."
https://thefederalist.com/2020/01/20/no-trump-defense-lawyer-alan-dershowitz-is-not-conceding-abuse-of-power/