Did Zenos ruin Endwalker

[Simple_Barghest]

I think you meant to emphasize 'foil', but yeah that's what he is. Like Agent Smith to Neo. Sabertooth to Wolverine. Zod to Superman. Sasuke to Naruto. By 'mirror' they are equal or near equal in power, determination, and resolve. What Zenos haters need to realize is that's what he is meant to be.

Nah I emphasized the right word.
Not my fault you don't like what I'm saying.

Edit: More to the point, you seem to be (funnily enough) missing the point of using those characters as examples of how Zenos is a 'good foil.'
Smith, Sabertooth, Zod, and Sasuke are all four their own entity.
Neo, Wolverine, Superman, and Naruto are all four their own entity.
When each character is foiled against their counterpart, taking into account each character's own life experiences, beliefs, and motivations.

The Warrior of Light is an empty puppet whose motivations are entirely up to the individual player that controls their particular iteration of the WoL, regardless of what the writers try and rewrite in after the fact.
When you say Zenos is a foil, you are saying this in regards to your Warrior of Light. Your interpretation of the character, and your motivations inserted into them. Which does not apply to all WoLs.