For dps it is, they don't have instant queues and this affects them more than tanks or healers.
Quote Originally Posted by Felis View Post
login queue is not related to the current job of the character
The argument is that because DPS queues are so long, a DPS who has an hour's notice won't be able to run any content for the next hour because they'll spend 45 minutes in queue, get 15 minutes into the dungeon, then get booted.

That's why this needs to be a temporary measure only until a more permanent fix is applied. I am hoping the client update next Tuesday includes changes to boot everyone after 30 minutes of no input (or the only input being a single key e.g. running in place) regardless of what they're doing.