No, it doesn’t have content aware functionality. I really wish it did, though having tried it with photoprism, I wasn’t impressed. Most of my pictures tagged with cat wither had no animal, or my dog. Maybe 150 out of 5000 cat pictures (my wife and I have been taking digital photos since the late 90s) got tagged as having a cat in them.
If the facial recognition is wrong, you can correct it, yes.
I’d say it’s a bit less accurate than Lightroom if you’ve used that for recognition.
Like many others have said, I’m keeping an eye on immich and plan to try it soon just to see!
(Deleted other reply by mistake!)
And I’m another who self hosts Joplin. My wife and I use it on our desktops and mobile devices. We specifically switched to it from One Note and it’s been perfect for our use!
I used it extensively as I was writing (I’m an author) to make notes about things I needed to go back and correct, or an idea to incorporate, etc.