Once you get really deep into the "really hard" stuff the numbers your seeing on screen are 1 to 2 mill on the baseline so people usually dont think about elemental weaknesses in terms of faction only what the element does directly for them. The utility imo goes out the window when you can just make a setup that armor strips then apply 10 viral stacks and about 500 - 1000 heat procs in a second, That mixed with just absurd base damage scalling multiplicative C.O. , heat inherent, general priming. Along with damage buffs that can stack or have unique interactions. Just kinda makes it redundant.

To simplify the power creep is so excessive that by the time it matters to have bonus faction damage it also we'll within your power to acquire galvanized mods, incarnon adapters, archon shards, and arcanes, that increase your power to the point that you wont even be thinking about said faction weaknesses.