Lesbian Kiss at the Olympics / Far Right Italian Prime Minister Reaction

https://slrpnk.net/post/11980077

Lesbian Kiss at the Olympics / Far Right Italian Prime Minister Reaction - SLRPNK

as a cishet, from the bottom of my heart: seethe. don’t even cope, which you clearly can’t. just die alone seething.
I know what cis means but what is cishet?
Het is hetero. Not gay/bi/etc.