No. Well, I wouldn't. I'm may be the biggest pentatonic fan on the forum. Bassackwards as it is I lookk at everything through the lense of the pentatonic scale. But I would be using the major scale patterns as practice fodder. Not neccessarily to USE the but because:
You get three notes per (most) strings. So that helps your alternate picking, it ends up changing what direction you pick as you swap strings.
Getting your fingers and ears the know the major scale, even before you can use it is valuable.
All the theory stuff, building chords, naming chords, uses the major scale.
That said jamming with the pentatonic is easier to get started on. However somewhere along the way the two sorta merge knot almost the same thing.
I encourage people to use the major scale as rote learning and support for learning chord theory stuff. And the pentatonic as instant gratification if you will. And eventually the smash together and complement each other.
I understand what Justin is saying. But even if you just mindlessly learn the major scale patterns as a physical exercise while you are learning to use the pentatonic I think the benefit outweighs the addition effort. That might not work out for some folks though.