For someone who has never used a Kindle/e-ink reader I would agree with you, they will be tempted by the "cheaper, more capable" device but as someone who has owned iPads/Fire Tablets/Android tablets _and_ an e-ink reader (Kindle) I can tell you it's a whole different world. E-ink is just so much nicer to read when you are reading a book and the battery life is amazing.

Compare that to Android where you might be tempted to install Social Media Z app (I can't use X anymore :/) or your email/IM app. The distractions from that make it a sub-par reading device IMHO.