I have a recent Samsung Galaxy and haven't once accidentally triggered Bixby. Long press on home button is google assistant. I'm sure I disabled some Bixby settings when I set up the phone but at this point I don't know how to open it even if I tried.
Must have changed in the years since I had one. They had a dedicated Bixby button that you couldn't assign to anything else and updates to Bixby would constantly mess with settings related to activating Google Assistant. Good to know things have gotten better.
