I agree that the right to repair needn't overlap with user replacable batteries but it seems a false choice that we have to make between thin and replacable batteries. In the time of the Walkman there were some seriously compact devices and I realise that expectations have moved on, but the most compact Walkman designs were all thinner than the average without resorting to sealed units. I'm sure there is some structural impact from removable parts but if they were end loaded (as has been done with lots of compact consumer electronics) they could still be pretty sturdy and deliver a better experience for users tired of their devices' poor performance from something like 8 months to a year after purchase.