The subject term is a derogatory appellation used to address a supercilious, demanding, and rude old man, which has been widely used in the Chinese Mainland.
I am an octogenarian, but I am definitely not a Lao Deng.
PS. The author of the following article was the former editor-in-chief of the semi-official media outlet Global Times. Well, some people have regarded him as a Lao Deng.
年輕人煩老登，這是時代的真問題嗎？ _風聞
