One of the most frustrating things about HN is that people seem so unaware of how idiosyncratic their preferences are. If you stood on the street corner and asked every passerby what they would change about their phone, I think you would be there all day before someone said "I wish I could replace the battery".
It's okay to have idiosyncratic preferences (I certainly do), but people should recognize that this law will make phones _worse_ for most people, because this law will force phone manufacturers to compromise the things that most people want in order to provide something that most people don't want.
I suppose someone will say that this law is necessary for environmental reasons, regardless of people's preferences. But that's nonsense, because the law doesn't actually require people to replace batteries rather than replacing their phone, and by the time batteries wear out, most people are going to want a new a phone. At the very least we'd need to see some data that shows that most people replace batteries when it is possible to do so.