No, hear me out.
Obviously they weren't real, but the Youtuber said (based on sources) people used to talk to the gods, like you might talk to a cat. And the gods spoke back (and we all know cat owners who insist the cat is replying).
As societies became more sophisticated, this stopped. Around the time of the collapse, rulers complained that the gods were silent. The usual interpretation is that the gods did not help, but what if they literally stopped "hearing" the god's replies?
You couldn't have a conversation with Zeus in the town square anymore without people saying you were nuts, unless you were a ruler. But the sophisticated, skeptical societies also became fractured and disloyal (especially when only their rulers were arguing with Zeus over why the peasants weren't taking them seriously), and social institutions (which were stuck in the past) couldn't keep up.