I believe it originated with Klaus Schmidt, the original excavator and one may as well say, the discoverer of the site.
Its hard to believe an educated individual would come up with that.
And to merge that concept with hunter/gatherers is just insane even if it was proposed as a once a year celebration or something the work involved could crush several small tribes.
Then again this is a field where there are some pretty silly stories we are expected to believe so maybe maybe it didnt strain credulity among those academics.
A theory like that combined with a discovery older than Egypt (”because everyone knows Egypt was the first”), its hard to believe anyone gave him the funding.