Depends on your use case but the most recent GPU encoders are pretty solid actually. Used to be that they were awful for quality, but more recently they seem to have vastly improved.
The person above also pointed out that things like machine learning are often better done on a GPU anyways. Certainly if you offload your video encoding to your GPU it does change the value proposition of that entirely.
They asked what people are using it for right now and video encoding is one of those things. This is very direct. They didn't ask about solutions or what they should do about a particular problem, just about what people are currently doing.