I say, as long as it doesn't interfere with feeling the song then it's not that bad. I don't use it for rock/original/bands because I don't need it, but in my cover band my drummer uses and IPad, my guitar player uses the big old music stand and our singers use a laptop. Of all of them only the guitardist stares at it like it is a BBQ sandwich taking to him, the rest play just fine.
Some musicians that is just how they do it, they don't "learn" the song, the read it while playing it and they do just fine, but as other have said, that is for complicated stuff like Jazz big bands or symphonies, etc...
Some musicians that is just how they do it, they don't "learn" the song, the read it while playing it and they do just fine, but as other have said, that is for complicated stuff like Jazz big bands or symphonies, etc...