Which still doesn't really answer why use them. Why make it intentionally harder to understand your comments? What's the upside to it?
Edit: I've looked at your previous comments and saw you explain it to someone else where they've come from and your preference, but I feel like if you have to explain it to everyone it can't possibly be a useful way of communicating.
That is interesting!
My problem with using defunct letters is that it requires a lengthy explanation, and even then is still hard to read. It would be easier just being in a different language entirely, at least I could copy and paste into a translator.