Delta also means change and with its connection to the triangle is one of the more important letters in the kabbalistic/gnostic system.
Everything is a gigantic ritual to these people.
I do like delta though for mathematical descriptions of things. Hence why I believe their choice of variant naming coincides with a ton of psychological factors. PHD grads who use any form of displacement in their work can claim superiority in using the word delta, leading to even more fervent virtue signaling.
(post is archived)