I travel out of Newark a few times a year and honestly never really had much of an issue, it was actually a damned delight during COVID because the crowds were small. I will add that I usually fly during the week on business hours and it really is a different flying crowd full of more frequent fliers who just want to get there. The few times it was a pain in the ass was when I'd leave on the weekends. You tend to get more family travelers/lesser experienced travelers who can indeed hold you up when it comes to things like checking in or security.