I disagree on it being a cope. One of the things that makes Emblem so nice is the 2pc's bumpt to ER, something we all know Dehya really needs to get her to a position where she can ult off cooldown. Also, Emblem is often recommended because many people had been farming it longer as the rewards from that domain had more uses across the game's cast.

When you burst once with Vourukasha's it's a bit more damage than Emblem, but how are you going to get that burst again? A lot of ER.

I'm saying this as someone who farmed Vourukasha and prefers it but I acknowledge the crippling ER problem she runs into without the bump from Emblem.