Yep. Grenades in MY past are always duds, otherwise I wouldn’t be here to talk about them. It doesn’t matter if they were fake, or malfunctioned, or had a pseudorandom or quantum probability to blow up. Past throwers of grenades are only relevant in the sense that they are evidence of future grenade-throwing.

Grenades in my future are those that I’m concerned about. With regards to people intending to throw grenades at me, the only distinction is how sure I am I’ll live; even something deterministic but hard to compute (for me) I consider a risk, and I’d be angry with the presumptive thrower.

(A fine point: I would be less angry to find out that someone who threw a grenade at me knew it wouldn’t blow, even if I didn’t know it at the time. I’d still be pissed, though.)