This is different than the popup that asks you to send data. That data is used by Epic to improve Unreal Engine.I’m not a developer, so I can’t be aware that it wasn’t mandatory to be online. In general I always accept that it connects, because it will not have any information of my network, I accept to be able to send the necessary information of the files of the game. Developers often collect such data in order to improve their games.
This v17 has it where it tries to connect to a server, that has nothing to do with Epic.