I have the S10+ I switched from some cheapo blu phone that also had google discover if you swiped to the left panel. Yes the S10 has bixby home but the S10 comes with a google search bar right on the homepage and if you click the little G on it it takes you straight to discover. It's a stock feature. Also you can disable bixby home so it isn't there at all. However besides using a different launcher theres no way to set it up as anything other than bixby home.