hey robert,
yeah, so to help you understand why: that's the fundamental problem behind memorizing shapes instead of learning the notes (a little bit of music theory).
it could take a bit of time to understand the notes individually, but i would spend your time learning music theory so you can understand the different scales (and the individual note "colors"), then apply them to chord progressions.
what i would do is start with the minor pentatonic one, since that's probably the one you've memorized. if it confuses you, just go back one lesson until you understand something completely.
but the basic version is the position you're playing is a "scale." a scale has certain "degrees" between each note, which makes up the "sound" of that type of scale. you'll discover that these sounds can be found all over the neck (up, down, horizontally) and once you know the degree intervals between the notes for that scale, it's much easier (and freeing) to make your way around the neck.
if all of this made zero sense, or you find you don't know something tomo explains, write it down and see if you can find other videos to help you learn this.
there's no problem to take steps back until you're ready to take the step forward. i've been there lots of times!
good luck and let me know if you need clarification on anything else.