If that is your reasoning then they might as well “rescue” all the other astronaut on board the ISS and shut the entire thing down. You’re not rescuing someone

If that is your reasoning then they might as well “rescue” all the other astronaut on board the ISS and shut the entire thing down. You’re not rescuing someone from a danger that was already there and part of the mission. Them being “stuck” for a few more months doesn’t make them “in danger” If they weren’t up there now two different astronauts would be up instead of them. And it would be part of a regular mission. Those would not need to be “rescued”