Not defending the unrepairability of Apple products, but if the laptop is this important to him that he can't be away from it for a day or two, then perhaps a b

Not defending the unrepairability of Apple products, but if the laptop is this important to him that he can't be away from it for a day or two, then perhaps a backup laptop that can perform ~75% of his duties would be a better option. Or a cheap mac mini tucked away somewhere. I assume he has backups, unless everything truly does live on the laptop which is just playing with fire IMO.