I for one use and like using both fzf on the search history and the ghost text history. With history, I often end up writing a line that isn't shell so that it fuzzy-matches what I'm looking for. I like having the passive suggestions in addition to that. It doesn't get in my way and if I like what I read, I can accept it.

I'd rather have a good history search than autosuggestion, but having both is a net-positive in my day-to-day.