I know a local parish that has that posted above the exit doors of the Church,
“Judas left early too”. It’s one thing if someone had an emergency etc but when it is a regular habit it is another. It really is rather sad because if it is the habit type, they only hurt themselves. A couple of Sundays ago, my family (5 people) just made it to Church on time, (priest hadn’t walked down yet). The only pew that would fit all of us had an elderly couple at the end. They gave us dirty looks because the man had to stand up to let us in the empty pew and then they leave right after communion. Now maybe they had too but it seems all too often that those who want to book it right away, sit at the ends of pews, get mad if they have to move to let others in, never sing and seem grumpy and unhappy. Such a great witness of the faith.