So checked their articles and found this recent one about the US-Ukraine leak: https://thegrayzone.com/2023/04/07/leaked-documents-us-nato-...
"Neither the New York Times nor the “military analysts” it cited explain how the documents were altered, or why they have the appearance of tampering."
Thankfully they provide the leaked document (The black box "TOTAL ASSESSED LOSSES"): https://i0.wp.com/thegrayzone.com/wp-content/uploads/2023/04...
And the numbers are VERY poorly photoshopped: The doctored text does not align with the rest. Character position, height and spacing suddenly change (look at the "71.5k" alone). The russian aircraft losses have a numbers photoshopped out (from "7x fighter/bomber; 8x rotary wing" to "7 fighter/bomber; 8 rotary wing".
So would agree with Wikipedia, that The GRAYZONE is NOT reliable.