Given that Yandex is a crucial part of Russian propaganda arm, we should consider the whole range of possibilities from:

* Good. This is great researchers helping community by sharing great work. (which is what I'd like to assume before I have any proof of the contrary)

* Bad. This very expensive training has been approved by Ya leadership (which is under Western personal sanctions) because they've secretly built in RU's propaganda talking points into the model. Such as "war in Ukraine is not a war but special operation" etc.