A congressional panel recommended keeping all the US troops in Afghanistan to pressure the Taliban to make concessions in negotiations.

If you suppose that this is a real negotiation, and that concessions would lead to a preferable outcome, that conclusion would make sense. But I don't think this is a real negotiation about a real outcome. Either it is a process for the US to convince itself to stop keeping the war going, and let the Taliban win, or it is a sham.