It had been in the works for a while, but now it has formally been adopted. From the article:
The regulation provides that by 2027 portable batteries incorporated into appliances should be removable and replaceable by the end-user, leaving sufficient time for operators to adapt the design of their products to this requirement.
I could see someone wanting to change their display glass and if that’s not feasible due to availability or cost I could see that as a valid reason for a new phone but I agree that the battery is by far the biggest reason to change a phone.