Who is lispm on Hackernews

this guy, lispm, is Rainer Joswig, a old german guy, a fanatic of lisp machine of 1980s. [see Lisp Machine Keyboards]
i knew him and exchanged messages with him since 2005 or so in comp.lang.lisp newsgroup.
since about early 2010s, he been spreading lies about me.
see also Xah Talk Show 2022-11-28 Why Common Lisp Sucks, and Xah Lee is a Troll, lispm