And this is what I read that explains that Oauth 2.0 will not work with pop3:
https://scottiestech.info/2022/03/08/make-thunderbird-work-with-your-gmail-a...
This link starts with the statement "TB stops work with POP3" without providing a single source or proof for it.
It takes at most 5 minutes test TB with oauth2 to see for yourself, but apparently you prefer trusting random Internet site and jumping through the hoops. Your choice. Your statemnts are encouraging, I will definitelytry it. If I have to over and over to try to get it to work. The above link is only one of
the things I read. I looked a great deal and found nothing supporting that it does work. Admittedly, I am visually impaired and I may not have looked in the right places. Thanks for your input, Gustav