You absolutely should post about it when you short for good cause - there was a fund that earned it's money that way. Do research, find adverse fundamentals or malfeasance that are underreported, short the security, then publish your findings and let the market do its thing. IIRC, it was them that publicized that Nikola (Electric truck startup) faked their demo video by rolling a non-operative prototype truck down a stretch of slightly inclined highway.