Not to sound doom gloomy here, but my reasons for ditching Blizzard games were absolutely not the launcher. I don't think I'll be going back to Overwatch or anything else in their portfolio because of my issues with game development/marketing (PvE in OW2 promises vs. reality, Warcraft 3 Reforged debacle, etc.).
That said, for anyone who still is up on Blizzard properties, having platform choice is always nice. I still play a ton of Apex Legends and love that it's available via Steam rather than just EA's launcher, for example.