Does The Voidcast Dais (Normal) have the most lethal tankbuster in 6.51 DF?

So many rando tanks get chunked chunked chunked chunked then blown the fuck up by the final hard hit. This is before they collect vulns from Shadow Crescent + Gale Sphere. Meanwhile I take less than 1/4 of my HP from the entire thing by pressing my 30% and short CD. One time I added Hallowed and Cover to the mix to save a double weakness tank's life

The funny thing is they also often give up uptime because they think the AoE is thrice as big as the indicator or something? but don't mit at all while they're Tomahawking/doing nothing and die

I will also say that both healers being new/incompetent turns the instance into a vote abandon wait torture chamber and make you deeply regret not picking a rezzer of some sort. People really unable to figure out Shadow Crescent after seeing it for the 10th time