> I guess I mean "beam for everything" is a fad.

There is no such fad. The vast majority of seasoned BEAMists will tell you that it is not for everything. There are enthusiasts bringing some surprising stuff to it which is great as it mostly falls into the category of "useful for things users are already outsourcing to other languages." But there is a whole host of things it will just never be able to do and no is pretending that it will.