I own an Apple Watch 8 45mm which I got less than a year ago, recently I noticed that my watch, which I hardly use by the way, started to run down very fast and besides that I noticed for the first time that it gets very hot. Since I hardly wear it at all my battery percentage is 100%! Also I didn't download any apps on them, I read the tracks and noticed that this problem started a year ago! But I'm facing it only now, as well as everyone else after an AMAZING upgrade to version 10 (by the way after the upgrade I noticed that the screen got smaller because of the software) Now my watch, which used to just lie on the table and which I used not more than a couple hours a week, not to mention that I didn't even use all the functions of this watch, started to run out of battery in half a day, lying on the table, although before it could lie for days. I am now afraid to wear it, as it gets very hot and I am afraid it might just explode on my hand
So in conclusion, I can definitely state on my example that this is 100% a software problem, because as I said before, I am one of the few people who have hardly worn the watch since purchase ( the watch was bought in 2023 summer )