The dark side can only choke people who have evil intentions. Otherwise he could have just choked everyone. Luke, Leah, the Ewoks,
Similarly the eagles were only able to fly to mt doom after the ring was destroyed because some blah blah blah rules.
I’ve often thought rules in most fiction are pretty arbitrary. The worst is Harry Potter what a bunch of garbage there. Write any old conflict you want and all the sudden in the end there’s a magic spell for that. Seriously how stupid is that.