Please pass the glue!
Surely they do at least one
thing to help those following such paths. The question is what. Let's assume they don't undertsand how to use their mind-body as well as you, like just about everyone else you teach, does that invalidate the spirituality of their Aikido? Does a "lesser" understanding invalidate the spirituality?
Maybe we should look at your question from the opposite side. What is the validity of assumed spirituality in absence of consensual reality? In many respects, deep spirituality is integrally linked to the depth of reality of one's life (my opinion at least).