I never said others should do that. Just that when things get rough people shouldn't bail. Nowadays people leave at the merest sight of adversity. I agree with the OP that something penalizing these people should be put in place.
I actually only run Mythic content these days sparingly if at all because I did that type of content to death years ago. I'm kinda over it tbh. But still I don't get involved in things half assed. If I sign up for something I do my darndest to stay until it's completed.
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Yeah I totally get it but those immature people who want to leave with no punishment are just that, Immature. Everyone's time is valuable. But some choices should carry weight. Regardless of weather it's a game or not. If you are playing a solo game by yourself then do whatever you want. But this is a multi-player game and to do current content you need others to help you and work together.