All serious politics is a balancing act. In general, I think history shows Biden is willing to suffer short term bad PR if he thinks he can get a bigger payoff in the end. The public and esp the media always want instant reaction and high public profile on every issue, but anyone who has ever been effective at negotiating in a complex organization know that keeping your powder dry is often way to win the war. Now of course Biden may miscalculate the balance in the end and end up in a less than optimal position, and anyone can have an opinion that he should be doing it differently and produce arguments to that effect. But I think an observer would be mistaken to think the issue isn't being worked, even if they think a given strategy is a bad one. I also think Biden understands that his best game is to control the amount of video of himself in the daily news cycle and that comes into play as well.