Not without noticing, but accidentally fat-fingering the “allow” button.
TBH, I just didn’t need root access “on the go” - so, when I’ve decided I wanted to build my own image, I just haven’t found a reason/use case to include it. I had the full flash backups, an adblocker, a patch for clipboard read permission and a few UI customizations. And ability to add more stuff. That was all I needed.
A shame I had no control over bootloader and wasn’t able to truly lock down the device to my own signing keys.
Wait, you're worried you'll give something root without noticing? I can understand if you're worried about your mom doing that if you rooted her phone, but yourself?
(About rooting one's mom's phone, anecdotally I wish I had done that. She keeps getting notifications from Sony, the manufacturer, and things are just not customizable to suit her. When my grandma got a new smartphone a bit more recently, I rooted hers and then just set the supersu default to deny so she'd never get the prompt, and she's much happier with her phone. I've been considering rooting my mom's but the device wipe is such a pain, especially since you can't do app data backups without root (another reason to root: make actual backups). Android really needs an Apple iTunes-like backup system.)