Bixby is the worst. I switched to a Huawei because of it, which is a shame - I loved my previous Samsungs right up until you accidentally bumped that button.
After toning it down, a single press doesn't do anything, but sometimes I do accidentally long press while trying to adjust volume or grabbing the phone. The Bixby update screen that pops up doesn't respect back button at all, need to click cancel.
Samsung should instead make it freely configurable button, including ability to completely disable it.
Android devices are functionally pretty similar, and at the time the Huawei and Samsung scored the same ratings for their cameras and had near-as-makes-no-difference performance. So it was an easy decision. Samsung had a rage-inducing button, the Huawei did not.
Why is this hard to believe? The smartphone market is currently very saturated, with only very limited differences between high-end (or even low-end) models of different brands. If one brand has something stupid (especially to the tune of "annoys me every day", like the mentioned button) it seems to me that it's fairly obvious you would switch.