Using classic Outlook for Windows in business environments
No, the use of the EAS protocol is not supported and also won't be added. It was available in previous versions of Outlook (2013) to support the old Hotmail/Outlook.com infrastructure but since that has been switched to the Exchange Online infrastructure, EAS support within Outlook has been deprecated in later versions (2016) and even completely removed in current versions.
Which provider are you using which requires you to use the EAS protocol?
Note that the Classic Outlook for Windows doesn't use the EAS protocol to connect to Exchange either but a "regular" Exchange connection.
Currently, the New Outlook only supports Exchange Online and Outlook.com as Exchange mailbox providers. Support for On-Premise Exchange or other hosted Exchange services will be added later.