Why is "Duty Roulette" a solo feature?

[FMElan]

I know people say its so those low-level dungeons can get tanks/healers, but as a tank I don't even bother with low-level DR, the rewards aren't enough. Only 10 myth? At least make it thirty so it'll be on par with WP/AK. Haven't even tried it, too much risk getting in a group in SV that times out on the last boss because issues or w/e and 0 reward.

As a tank, I've DF'd Stone Vigil at least 40 times to get my sword and have never had a party time out. So I'm confused as to how this is even an example...