Right to Repair does not ask that any user can do the repair or change the batteries, they ask that competent users and third party repair shops can do it. So if an Apple hyper genius can do it there is no law of nature that makes it impossible for a competent non Apple genius to also do it.

If this is not enough I suggest they put more glue on the sensitive to Helium areas, I heard Apple glue is magic.

You virtually cannot. Short of potting the phone in a slab of epoxy, or welding every seam, helium will find a way to sneak through any rubber gasket, O-ring, etc that seals a phone, even straight from the factory.