While I cannot answer the OP's Russian question, I can add my personal damaged passport data point to this thread.

I washed my previous Canadian passport twice back in 2016. Left it in the leg pocket of my cargo pants, and pulled it out after the rinse cycle, and left to air dry on a desk. Note to self, pay attention when you arrive home after midnight.

Probably crossed the US border 50 times with it, as well as other countries, without off handed comments or any unusual looks whatsoever. In fact, the only one who had an issue with it was our own passport office staff who made me notarize a declaration when I renewed it, as I was turning in a damaged passport in their eyes.