Now someone might say something silly like – I know 12 people that are so ehrlich that they daven a 45 minute shemone esrei, never removing their noses from the siddur. They sometimes use phones and still do the same thing – they only daven from the phone and nothing else.
Yes, it could be used correctly by some people. But the general population and especially younger people are not so trained in kavana by davening and are not so resistant to the Yetzer Hora, so most of them won’t be able to do it this way.
Like everything else in this world, it can be used for good or bad. It is not all good or all bad. But to the untrained hand, it is more likely to end up bad. If a safer, more reliable alternative like a Siddur is available, why not choose that?
This is much like the whole Internet controversy, whether to totally ban it, use it for good, or continue to use it unfiltered, refusing to see any possibilty of problems.
New Slogan (feel free to steal it):
Choose the SEFER – it is SAFER!!