> They seem to be a mac user so I can only guess it might have to do with lack of expandability of the used hardware? More enthusiastic Mac-using photographers

> They seem to be a mac user so I can only guess it might have to do with lack of expandability of the used hardware? More enthusiastic Mac-using photographers would probably invest in a consumer NAS like a Synology for expandable storage. It's also great for offloading videos and other large, infrequently-accessed files. Some Apple users these days also opt into paying for more storage for iCloud Photo Library. I personally think it's a great deal, since I can also get away with buying an iPhone with the lowest amount of built-in storage (saving ~$100 over the life of the phone), in exchange for paying $0.99/$2.99 more a month.