According to Osho, in spiritual life you cannot fall backward; each inch of growth is irreversible. 'Bad company' cannot pull your energy down, but it can obstruct its upward flow—detaining you at your present level, distracting you, and creating stagnation. Thus, the worst outcome is getting stuck or delayed in your evolution, not losing what you've already attained.
Bad company can’t undo your growth; it just slows you and keeps you stuck.