Understandable, I don't know of anyone off of Twitter but maybe some of the people I follow are on Mastodon. I'll try and find out sometime and get back if they are.

And yea pretty much, just stands for open source intelligence, people just use publicly available data (mostly drone videos, and paid satellite imagery) to analyze progress from both parties in the conflict giving a real, semi live perspective on advances on the ground, what kind of equipment and quantity of that equipment that have been destroyed.

This site by oryx is the main one I know of that tracks destroyed Russian equipment that's confirmed through imagery, so the numbers are likely fairly lower than reality, and the destruction numbers are still staggering.

Ops I see someone below already linked oryx and some other good sources!