I can see the point the hardcore players are trying to say that the total amount of content will not last them very long with a quick re-entry timer but the point some are trying to make is rather ridiculous. The actual amount of content to think about is the actual amount of time inside the raid itself. People are declaring that it's already not enough without actually knowing how long it will take them inside to do what they need to do. What hardcore really should be demanding is more playable content if they fear this and not stretching out the time between the content so it feels like you've been going through it for a long time when the actual amount of time inside has been roughly equal in achieving the same goals to what it would be with no time restrictions.

Some people just can't hold back unless there is that long forced re-entry timer for fun content and I'll probably end up going for at least 8 hours with friends if it really is fun on the first day. Even if it only lasts me 2 weeks, it will have been a solid 2 weeks of fun content playing inside which I just happened to rush through.