Hmm, since this is Android, would a rooted phone running AccA† to limit maximum charge work?
Never heard or seen anything like that at all. The fact that you are not even given an option despite decades of "this really is one of the most important things to billions of devices" makes me a bit hesitant to believe it.
But many/most of these older devices discuss, do not - and my personal anecdote is that of the tens of phones+laptops I have owned myself and managed for family through the years - there were 4 cases of bulging: 3 were constantly-charging devices (as in, 3-5 years with hardly any time not charging), and one that was dropped from height and bulged immediately.