Isn't the idea of this site to discuss and help others understand electronic circuits? Then why remove schematics that are relevant to a discussion. I can understand a moderator removing a foul remark but nothing more.
The answer to the question, therefore, is "the schematic is dangerous, and someone could get badly hurt working from it. It was removed to protect everyone."
There is a curcuit that look the same on the internet that
throws metal washers 30 feet into the air,could go 30 feet in any
direction also making it a dangerous curcuit.