Not that difficult really.
Devil's advocate: "Right to repair is a misnomer, you can already do whatever you want with what you bought. Forcing companies to make their products accessible to everyone who believes they're qualified to work on it will create significant confusions. If you waterproof your phone and someone can't get it waterproof again after opening it, are you liable? What if they set their house on fire because you used a slightly different battery pack than they were used to? How are you supposed to know the mind of those working on your products and anticipate what steps they might take? That's an avalanche of law suits waiting to happen. And if repairability is really as widely lauded as our Democratic friends are pretending, then companies will cater toward that need without any necessity of interference on our part."