Scholars have been dealing with this for years. Two WHMs in a group? No problem. Two ASTs? Non issue. Two SCHs? Now we're in trouble. It's not about if you can get through the content just fine, it's more that now the healers have to tip toe around each other, not utilizing their kit, not having fun, and worrying they'll overwrite each other's shields. It's awful. I don't know why you're getting so much pushback from people on this. It is literally not fair.

Honestly I think the devs are just scared how powerful double shields would be.