"Do not want" is not strong enough.
Identifying this as something I do not care about would be innacurate.
I really consider this something that not having would be far superior to having.
For comparison, some phones have an FM radio. Some people want and use it. I have had it on phones in the past bur other than trying it out I didn't use it. It's presence is not a sale point to me but I would not consider it a negative. I would consider Bixby as something that will weigh against my purchasing something.
Bixby is the latest example of what I have heard called "crudware". Software that does not do anything new, unexpected or even better than what is already available but can mess with it. The worst example I can think of is the Samsung calendar. I add an appointment on my phone and it does not show up in my Google Calendar so I am not reminded of it.
I think the first example I came across was the "hubs" on my GS2 long ago. For example, they gave me the opportunity to jumble up my Gmail, text messages, instant messages and so on. Instead of having reminders that I had 4 emails, an IM anf a text, it would just say I had 6 messages. That doesn't seem to be there any more. They just need to get rid of the other alternative functionality and I might consider Samsungs' excellent kit again.