I tried it and it’s way off for me because it gives too much weight to submitted posts. I don’t have very many submissions so even when I selected recent only, it focused on one guide post for a game I wrote many years ago and made the profile 80% about that. But I guess that’s a problem at some point before the LLM is involved. There are some other similarly non-LLM problems too like making the most used terms section list almost only subreddit names.
When I limited it to recent comments only it did a better job. It even listed “Humanity’s general incompetence” as the fifth of my “top 3” topics.
The iOS workaround isn’t quite as unsurmountable as you don’t have to go through the Photos app at all. You can enter text selection mode directly from the screenshot without even saving it or leaving the app you’re in. And since iOS will look up any word you can select in the system dictionary and also translate any text you can select, you can do these things right there too.
That said I did once make a shortcut that lets me triple tap the back of my phone to pop up a text version of everything on screen that the iOS OCR detects. Not sure what I did that for though, I don’t really use it.