They are likely removing IMAP. IMAP support is already disabled by default in Gmail
Can you share а link for this statement.
As far as I know IMAP works ok, you just need to use XOAUTH IMAP authentication.
If that happens, it sounds like a good chance to move away from gmail to something more robust.
App passwords are only available for 2fa enabled accounts, while OAUTH is available for everyone. So far I didn't get a clear answer if "the end of less secure authentication methods" means the end of app passwords as well, or only the end of signing into IMAP with your main google credentials.