

One catch is that Epic’s mystery code is allowed to execute on your computer.
Note that I don’t mean just their launcher. Often, if not always, the games themselves are linked with Epic code, ostensibly for license checks and/or integration with Epic services. This gives them the ability to snoop on stored data, installed/executing processes, biometrics, etc.
Running those free games with an alternative launcher does not protect against this.
It’s not just a theoretical concern, either. Epic has already been caught copying Steam files, collecting friends play history, and scanning running processes.
https://old.reddit.com/r/fuckepic/comments/wakewr/epic_games_spyware_vs_steam_vs_as_comparision_ea/
https://www.pcgamesn.com/epic-launcher-spyware
I don’t trust them, their CEO, or Tencent (which owns a significant chunk of Epic), so I don’t run games that come from them.
Heroic Games Launcher doesn’t change the code in the game executable itself, so yes, it is still an issue when using Heroic.