yes it is true that random ntoew is flat out not good but as i satrter i became frusturated so i just hit random notes jsut to get the feel then whent one to three string triads...and then adding notes to that...and that how far i got..
i was just giving a real begginer tip..just get the sound and feel of hitting a ntoe per string then start looking at the music theory and sutff that deals with true arpeggios
Buckethead