And yes there was some sort of maintenance/construction going on, and if that played a role in the fire one would think at some point in the intervening years between then and now someone would have shown how it played a role.
Workers were smoking in a space where it was explicitly not permitted, and renovation work meant there was electrical supply where "normally, no electrical is allowed in the roof space because of the extreme fire risk".
Pinpointing the exact source of ignition is a bit challenging given the fire and collapse, I suspect, but without any evidence pointing towards arson it seems like a pretty reasonable conclusion.
“Maybe it was an electrical thing or something” is far from conclusive evidence, and as OP was saying, completely incredible as a response to an event of this magnitude that attracted worldwide attention.
>pinpointing
I’m always surprised when I hear what fire forensics can figure out given the state of the evidence being worked with.
>any evidence pointing toward arson
The whole point of my original post was that all the circumstantial evidence points toward arson.