First come up with some numbers about the total number of power packs installed versus the number of fires. I'm quite sure they have considered the risk of fire versus the distance between the units.
Based on those numbers, this is "acceptable risk"?
The site's not designed at all for fires of this magnitude. The containers packed too close, there are no fire breaks anywhere with ceramic or brick wall in the rows. Mr Fireman ride your bicycle to get in there.
It's not far from a disaster kind of situation and everybody wants to keep it quiet.
It might not be Tesla that dictates pack spacing and site layout, Neoen maybe- but it's a copycat error that's everywhere now. Nobody planned for this kind of event.
Another issue is damage to the AC bus wiring would take out that entire row and everybody grab a shovel to fix that. In the electric utility industry, above ground cable trays are used for good reason- you can easily replace or add cables as needed, they are completely serviceable, transformer fires included.
Here it's underground and cooked due to the fire, not an easy repair. I don't know the intermediate bus voltage they chose.
The crane looks feeble with tiny counterweights so I can't see it moving a loaded powerpack, and the crane likely just there for construction afterwhich it's taken down.