he's the one forcing it -- he's not an active member of libc anymore, he's not a maintainer, but he decided that his personal joke from 20 years ago absolutely must remain in the documentation because he's petty.
He sounds like the one in need of a safe space where nothing ever changes
There was already a consens before he decided to contribute his own opinion to a triviality. By doing so he prolonged the discussion at least a bit. Forcing your opinion about a pointless and otherwise done issue on others seems like textbook bikeshedding to me.
At leaast now he can honestly say he is still actively involved with glibc.
He sounds like the one in need of a safe space where nothing ever changes