Very much this.
I'm an 'old' man. I'm not going to alter my schedule to log in at silly hours to play like I would in my younger days.

But I'll happily join the queue. I was just sitting in one at around spot 2000 when I got booted again.
I have not been able to succesfully sit in the queue and log in since (pre) release - every single time I get booted with this error.

At this rate simply logging in (even after 5 hours) is just not feasible at all.

The queues are expected - but they should work.... or you should retain your position for a few minutes at least if you're booted.