Oh I used to hear that from docs alot with my parents and it was aggravating and unacceptable (I didn’t get the medical degree!).
I’d say: “Please let me know the pros and cons of doiong this, and also the pros and cons of not doing this, and share the significance of the risks/benefits in all categories.” (said much more nicely). How is a layperson supposed to do that analysis without even that baseline info?