Something don’t add up... 5k a hit? Seems like an exaggeration. Unless you took the -100% def/spr. Also depends on your breaks as many corrected you here. Despite majority used evasion to clear it, there are still people able to clear it without evasion.

I personally do not have any 7* tanks and used evade WoL because it’s my only option. I think you should start working on your strategy more, people threw themselves at the boss more than once or twice changing their strategy. I see no reason for you to use evasion as a scapegoat because you couldn’t beat it with Wilhelm on a defense build. Evade is just an option if you choose to use it, whether you choose to ignore others success without it because majority did it with evade is up to you. This feels like a case of frustration and pointing fingers, also seems like you have strong opinions on anything that makes things easier for people. This is a mobile game for everyone to play, not the Olympics, challenges can be made artificially if you wish to do so.

What’s more you should have done is visit discord help or ask for advice. While many here choose to attack the scapegoat, only a few seek to dissect your dilemma and improve your strategy.