The phone doesn't become uncomfortably hot for me since many months. Mobian has been pretty usable since a few months at least. Writing this comment from it. The scrolling is not perfect, but more than enough to be usable. I even enjoy the web if I switch off javascript with Noscript Firefox extension.
Maps aren't very smooth but they worked every time I needed them. GPS positioning is not yet reliable
The battery only holds the whole day if you don't use it much, but a second battery helps.
Recent camera progress is shown here: https://www.pine64.org/2021/09/15/september-update-hurdles-a.... It's good enough for memories. If you need a better camera, consider Librem 5. Also have a look at Sxmo, if you want to see what Pinephone can do with an optimized software: https://sxmo.org.
Don’t get me wrong, I also have one and the once a month checking it out is a really great feeling how fast it develops. But it is no way usable as a daily driver unless you have some very very strange meaning.