Not all use glue, and It is possible that apple is changing its glue and/or using more. Most likely both. Maybe they have new glue and glue remover and want to

Not all use glue, and It is possible that apple is changing its glue and/or using more. Most likely both. Maybe they have new glue and glue remover and want to make sure all repairs go through them, because only they have the secret glue remover. But that would be far fetched maybe? /speculations