It almost never works. I think there are only a couple of the shoot down videos where they use it, and my understanding is it’s only worked a couple times this whole war.

normally it’s not, but Ka-52 has a system that pops propeller off in such case. it’s very unusual

Small explosive charges separate the rotor blades before ejection.

Russia has less than 100 of these as well. Every single one is a notable loss for them. :)