This is a joke thread about the 'world's worst grandmaster', Panko Smoobachuk. Seeing this post, I wondered, what is the world's lowest rated grandmaster?
The new, munged* FIDE rating website still has the old "Advanced Search" option, but the page doesn't have its own URL. There you can search for GMs from all countries sorted by rating ascending and then you get that the Russian GM, Vasily B Malinin, born in 1956 is the lowest rated GM with a standard rating of 2100.
Looking at his individual calculations shows that his rating has been in steady decline since 2004 which would suggest some life-changing event happened then, perhaps a health problem, which affected his chess playing ability.
*mung = self referential acronym = Mung Until No Good