What does "there’s lots of blame to go around" mean?
Here's the context:
"Long story short, the damned place caught fire one day. Max and I escaped by going up to the roof and down the fire escape. Many of the women were not so lucky. Although, let’s be honest and admit there’s lots of blame to go around. Smoking in the factory was strictly verboten, but plenty of them did it anyway, and it was a cigarette that started the blaze. Fire marshal said so. Max and I were tried for manslaughter and acquitted."

It's from Afterlife by Stephen King

Question

What does "there’s lots of blame to go around" mean?
Here's the context:
"Long story short, the damned place caught fire one day. Max and I escaped by going up to the roof and down the fire escape. Many of the women were not so lucky. Although, let’s be honest and admit there’s lots of blame to go around. Smoking in the factory was strictly verboten, but plenty of them did it anyway, and it was a cigarette that started the blaze. Fire marshal said so. Max and I were tried for manslaughter and acquitted."

It's from Afterlife by Stephen King

Answer

"There's lots of blame to go around" means that it is not the fault of just one person. The fire was started by one cigarette of course, but since "plenty of them" were smoking in the factory it could have been any one of their cigarettes which started a fire at any time. So it would be wrong to point out and accuse one person in this situation and pretend the rest of them were innocent of any wrong doing. The writer is pointing this out by saying "let's be honest and admit that there's lots of blame to go around". Meaning to say that all the smokers are guilty to some degree because any one of them could have started the fire.