Russia also definitely uses the BMP-1 so I'm not sure where that assertion is coming from.
There's a ton of Russian cope emanating from this failure. If you want to see a deep dive on the available information scroll through this massive thread by @Danspiun.
https://twitter.com/user/status/1524101694732255232
OSINT folks get stuff wrong, but I have yet to be misled by Oryx or this guy.