Yeah because without them some people feel that their guilds will require them to run everything they can to get geared up to do harder content.
No one is making these people run anything, if you don't want to run it don't run it. But if you have a lockout you are stopping people who do want to run more.
So people are being stopped from playing because other people feel like they will be forced to run more, THEY ARE NOT BEING FORCED.
Let us play, and if your GM is honestly forcing you to run content and you don't want to... that is your problem, why make it a problem for the rest of us, stand up and say no or find another guild.