Why? SpellJammer is hesitant, he DOES get flammed alot..
And he never said evil people can't be redeemed and or can't reach Buddhivistha.. But that's not what we're discussing, we're saying are some people prone to falling? And the answer is yes, does that mean they're doomed to lifetimes of being immoral, hideous abomonations? No. Not if they don't want too. Not stronger the darkside, just easier..