Understandable at times. Tell them they should have killed the cap totem or moved away from it, or the HoJ/Chaos Nova was DRed anyway. Assuming that they aren’t on DR for longer casted CC and you are saving your dispel cd for that or an upcoming root, or they aren’t like half a second away from a kill. That said cap totem is the easiest instant dispel to prepare for and can get them on a DR to help save them against a real go for a while. Without comms it’s hard to plan for that sometimes though.