SAFe is everything that has ever been wrong with the software industry rolled into one terrible thing that is anything but agile.
I can't fully express here quite what I think of it!
Tech guys like to do the same. One director once showed the "architecture" of the next big thing in our department. It was a bunch off boxes with "authentication", "JSON", "distributed", "NOSQL", "JSON", "Roles", "reliability" and twenty other buzzwords. He asked for estimates how long it would take. after asking what this means and what it's supposed to do I was out of the planning. Two years later there are still two guys developing it but nobody knows what it does.
So it was done using agile diagram methods?
The other issue that agile conferences don't have developers anymore.