I see some misunderstanding about my short post regarding avoiding the creation of your own game launcher. I made it from the point of view of the player. A game launcher is additional friction to get into the game; usually, you need to create an account and it requires an extra click.
Another aspect is that game launchers usually have way less polish, and while the game may run perfectly, the game launcher crashes all the time. One of the examples is the pain with the Blizzard launcher. The games run perfectly, but multiple times the launcher had issues running on Linux under Lutris.
Multiple game studios publish their games on Steam, so I need to run Steam. Then, instead of running Sims IV directly, it runs Origin, does some patches, and forces me to log in on EA. Dude, I just want to play the game.
So, if you are a new studio, publish your game on existing platforms: Steam, Epic Store, itch.io. Don’t make your own launcher.