You may be right, but I think he likely intends it as one step in a larger process. Maybe there will be subsequent steps, maybe not, but as you said it at least takes some kind of action to bring attention to the issue, to help deal with the paralysis in Congress right now.

Also, I thought the opposite: that if that detailed report is not given, all funding for it automatically halts after 30 days? I'm sure the devil is in the details - particularly whether whatever Biden sends is deemed "acceptable" to Congress that is receiving it? - but anyway likely Bernie means to accomplish something with this or else he would not have bothered.