It's mainly from experience. From when I set it up I didn't have the feature to ask whether to run commands. It has been rawdogging commands this whole time and has never been a problem for me.
I think we have many other users who are similar. To be fair, sometimes after watching it install packages with npm, people are surprised and say that they would have preferred that it asked. But usually this is just the initial reaction. I'm pretty confident this is the way forward.
Do you have any sandbox-like restrictions in place to ensure that commands are limited to only touching the project folder not any other places in the system?