Exactly my experience. I had just got a Pixel 7. Travelling with a friend who had the iPhone with Apple proprietary charging port. I got to be like "look what I can do".

Cool but mostly unnecessary.

I use it to charge my work phone in the field if I need to. I've also used it to charge my headphones or similar (also in the field). I always feel like there's lots of use cases people miss because they don't use a feature so they don't care if other people do.

I've used it a handful of times. Out with friends at a bar who didn't live in this city, It's 1 or 2 am and their phone was about to die.

It's neat, but annoying. Neither of us could use our phones and if they picked it up to check anything my phone would turn power sharing off and I'd have to turn it back on again. That happened like half a dozen times, and made using it such a pain in the ass.

I've done this at a theme park exit to help somebody get a few % so they could contact the rest of their party about getting a ride. I was annoying to actually do it, but it worked.