The yokai shift skills alone were enough for me to almost completely negate the dark realms though. When I fought the snake boss he went into the dark realm for all of 10-15 seconds before I drained his ki. I didnt even think to use my yokai core abilities, so it's gonna be even easier in the future.
The tools are there to deal with the dark realm. Going through a list of them and saying "nuh uh, I dont like this one" doesnt mean they arent effective. You're just digging your heels in the ground out of spite.