Regarding the possibility that this perp has a beef against AT&T, was fired or is a disgruntled employee, or is a nutcase who is making a statement against technology, lockdowns, or whatever issue he may have, doesn't quite sit well with me.
Why? Because according to the former FBI bomb expert who spoke, this attack was sophisticated. Not just the in explosives themselves, but the countdown recording etc. This was not some bloke who put together a pipe bomb from the internet, or went on a berserk shooting spree due to rage or perceived affront or grudge.
I may be very wrong, but I think, for now, that this was a planned event by someone or a group who are making a statement, without the need to massacre innocent people....for now..., maybe as a warning of what can come next, a message of capability, to instill fear, to draw attention ...to something, or a false flag situation to implicate or to cast suspicion on a someone(s) in particular.
Thinking aloud, I don't have a clue really, and I wonder...why Nashville? Why Christmas? Why no manifesto ?