[DiscoDays]

> Is learning any sort of Assembly language a good investment of time?

Learning to understand Arm architecture specifically or computer architecture in general can be invaluable. A particular Assembly syntax is just a way of expressing what you want to do.

I would suggest reading a book about computer architecture or taking a course. And if you are like me and are interested in what complicated things hardware does to fulfil the needs of software, you might want to first read a book on operating systems (like OSTEP by Arpaci-Dusseaus, which is marvel of accessibility and challenge for students), because it will make you ask relevant question.