Thumpalumpacus
Major
We know it went through the fuselage since the crew requested fire and ambulance crews. Fire from damaged electronics?
That is not a solid inference. Crash/EMS is called out on any IFE (at least in the Western militaries) whether or not damage is visible, indicated by warning lights or not, or not apparent at all.
Not that there isn't obvious external damage, and no doubt internal E-gear having issues. I don't know how deep their breaker boxes are but I imagine such a dense electronic plane would be able to isolate systems in order to avoid cascading failure, by using breakers.
At any rate, they're probably going to roll a full CFR response because of the life-loading and cost of the airplane -- unless they're stupid-incompetent. Yes, I know, big caveat.