You know to keep BTC in cold storage, copy your .dat files, use a clean boot of Linux or some other operating system, transfer your files on USB sticks... Do your honestly believe that the average person using a tablet is going to understand even a fraction of this?
No, I don't believe that, and to be honest, I don't even believe you yourself understand cold storage, given your brief description. But I don't think this will stop bitcoin adoption, most people will use online wallets, or something like a "bitcoin bank", where their bitcoins will be safe or legally insured. Maintaining money in local file is just an experimental software, mostly.