Under capitalism, a lot of the time, highly dangerous jobs are also highly paid. Kind of a balance that the individual decides to engage with. Same idea behind getting an advanced degree in STEM or law. I think of my job by example, I’m a power plant operator at a large combined cycle plant. No fucking shot I’d be doing this if the pay wasn’t good. I’m around explosive and deadly hot shit all day.
It would be better to say that all of it was the movement for communism but none of it was a communist economy. In that way I think it becomes clear. It’s like training for football. Is any of the physical training “football”? No. But all of it is towards football and the actions are specific to the movement for football.
Similarly, all of what we call communism in our day to day discourse is the actual communist movement working on the process of bringing about a communist economy (or just “communism”) but, since communism hasn’t been achieved yet, it’s still very experimental and unknown. Every step produces new empirical learning which gets studied by communists all over the world to analyze what works and what doesn’t.