MySQL Workbench crashes on mac os (fresh install)
I was having the exact same issue, I was able to download the older version from MySql's archives, and it worked for me.
P.S., I also had to go into System Preferences > Security & Privacy > General and open anyway for MySQL.
MySQLWorkbench 8.0.23 crashes for me on startup on macOS 11.1, but downgrading to 8.0.22 from MySQL archives allows it to startup without a problem.
This bug is reported to the MySQL bug tracker: https://bugs.mysql.com/bug.php?id=102284