EthFinance

Is there a dashboard for monitoring aggregate short interest against ETH?

Not aggregate but it looks like you can get some info from CME

New record high for ETH shorts? Find out at the close today

Yes: new record ETH shorts https://t.co/Gnzh39dcMT

zerohedge

A doodler and computerer. I like permissive/permissionless open source, smart contracts, p2p systems, room-scale VR, and NixOS.

shazow.net

Currently: WhatsABI

I did see that tweet, but haven't been able to find a public dashboard to corroborate.

Not aggregate but it looks like you can get some info from CME 

https://x.com/zerohedge/status/1867672001151975903?s=46&t=OVXmZqB_y8-sIjnpiW9SMg