Everyone has different threat models, vulnerable people don't need to use such a feature, assuming that it's all local and implemented perfectly.
It should also be opt out by default for Microsoft.
I personally see a lot of use for this if it was running entirely local. I always find myself in a position where there's things which I've browsed or come across but it's difficult retrieving it from my history.
>vulnerable people don't need to use such a feature
Vulnerable people often do not have a choice in the matter. Pre-installed, widely-advertised features are significantly more dangerous because somebody who is controlling isn't necessarily thinking of new ways to monitor, but they'll sure take advantage of any they know about.
It's the same problem as Apple's AirTags: GPS trackers existed long before them (and are harder to detect), but you can get a 4-pack of AirTags at the store and they're super easy to use.
It should also be opt out by default for Microsoft.
I personally see a lot of use for this if it was running entirely local. I always find myself in a position where there's things which I've browsed or come across but it's difficult retrieving it from my history.