The last Samsung phone I owned had a hardware button for launching Bixby. I've never wanted to use Bixby in my life. To this day I have no interest in learning what it actually does. You could not change the function of this button. It was just a button that I would press accidentally that would begin the apparently laborious process of starting up Bixby.

I'll probably never buy another Samsung.

Edit: Just thought of another one. I remember reading the news about how Android SMS was getting upgraded to have emojis or reactions or something. I don't remember the details. But it didn't work on my phone. A year later, I realized it was because I was using the Samsung messages app, instead of the Google one. I didn't even realize it.