In the hopes of a fix for this, I updated to OS Ventura 13.0 from Monterey 12.6. It is now worse than before! I did get my externsl 4TB Seagate Backup Plus to transfer almost 2GB to my hard drive without issue. I thought the OS update worked.....only to return an hour later to see at least 50 "disk not ejected properly" messages. I then conneced the external Seagate Backup Plus to an old iMac, running High Sierra 10.13.6......no eject problems at all! Come on Apple! I have a business to run, and I can't do it without external drives!