How? That is the one of the most densely populated areas in the country. Why wouldn't he get a huge crowd there? Because it is deep blue and Republicans get a low percentage of the vote? The low percentage of the vote translates to many millions of supporters in a small geographic area. Of course he can get a large crowd of supporters there...more than he could get in many areas that gave him 80%+ of the vote. It would be profound if he didn't get a large crowd - not that he did.
Articles like this are not helpful, giving the impression everything is going our way while Biden's media propaganda campaign is in full swing and going very strong. He is dominating the air war, plus the media is of course in his back pocket. We have our work cut out for us. The ordinary people out there who will decide the election are having their perceptions formed while watching their favorite TV programs - they aren't watching or going to rallies. It is good and important to have your base being excited, but having a party among yourselves doesn't convince a single voter.
They go the Supermarket, and fill up Gas also.
The old media is dead like roadkill nobody watches them we have become Hunter gatherers again but for true news.