It’s such a silly and disingenuous argument. The most recent version of gerrymandering arguably began with REDMAP in 2010, which was in response to Obama winning. Before that, it was used almost exclusively to disenfranchise black voters before the voting rights act in 1965. Before that, it was used by both parties in unison to maintain the supremacy of incumbents.

The American system adopted it from across the pond. Rotten and pocket burroughs were frequent in the 18th century and actually started getting outlawed in the 19th century right when the Jeffersonian republicans went hard with it.

The Jeffersonian republican/democratic republican is the father of both major parties, it split into the northern republicans (anti- slavery) and southern democrats (mostly pro-slavery).

Neither of those parties resemble the modern parties, which flipped ideologies during the Civil Rights Movement, among their most recent changes.

So, it would be safer to say that American gerrymandering was created by the precursor to both modern parties.