It's just another one of these "these words don't exist in this language so we're going to borrow all of them from Russian" projects, which they even state on their page "Also because all words are not documented in kamassian, all missing words we loaned from
the russian language."
https://kamassian.webnode.fi/information/
That's not revitalizing a language, it's making a mockery of it. It's also the MO used in all the other small Finno-Ugric language incubator projects (or borrowing words from Finnish). Here's another one that he works on (
https://incubator.wikimedia.org/wiki/Wp/yrk/Main_Page).
The front page is in Russian except for a few words of Nenets.
The fact that they couldn't wait for even approval does not also bode well.