What if those strangers were going to attack your friends, neighbors, or elderly parents with every scam and shady advertising/phishing scheme that they could invent?
In terms of user experience, it's pretty obvious that GrapheneOS suffers by comparison. For example, the camera app isn't as amazing as it is on Pixel with full Google Android, and it probably never will be. You can install apps from the Google pay store with Aurora -- even things like Google maps and Gboard for swipe typing, but you will probably prefer them to be more secure and so you'll lock them down as much as possible, lessening their utility.
So, in "practical", non-privacy/non-security terms, it's crazy to want something like this instead of the "real" Pixel 6 Pro experience (or Samsung S21 Ultra, or iPhone 13 Pro Max, etc), or perhaps until you read e.g. the shockingly bad Samsung privacy policy.
However, there are some other benefits derived from the privacy aspects that aren't strictly privacy benefits themselves:
* Hobby enjoyment
* Trusting (to a degree) your device
But, for me, I love my GrapheneOS phone and it's all of the above. I can live with the limitations, for the most part, and I've also purchased a wonderful Fujifilm camera when I really want to take amazing photos, which of course blows away any phone camera system anyway. The Pixel itself is still a really great smart phone experience, and way beyond my Pine phone (current generation) in terms of both security and usability, even without the few things that are taken out when you switch from Google to open source Android.
But neither is the GPT-3 to verify if the GPT-3 is GPT-3.