Even if you are set to EU433, I think this is legacy from the old method of selecting hardware and band in configuration.h
It may be a good idea to display which band and hardware is selected in boot messages and on the screen in case someone flashed the wrong firmware. All the sx1276/7/8/9 are advertised to operate over a wide frequency range, I assume that they may operate suboptimally outside of the intended frequency, though its not clear from what I seen scanning semtech datasheet.
Even if you are set to EU433, I think this is legacy from the old method of selecting hardware and band in configuration.h It may be a good idea to display which band and hardware is selected in boot messages and on the screen in case someone flashed the wrong firmware. All the sx1276/7/8/9 are advertised to operate over a wide frequency range, I assume that they may operate suboptimally outside of the intended frequency, though its not clear from what I seen scanning semtech datasheet.