Here's my point of view - why does Zig even care what Zen is doing? Zen's shortcomings don't impact the userbase or development of Zig in any real fashion.

The fact that the Zig foundation wrote this letter condemning the actions of Zen's founder/employees - especially when they closed the letter with a call to action to return to Zig - shows that Zen's fork actually matters to them, that they don't believe it should remain functional.