> Depending on how your code is written, modifying code baked into workflows becomes complex, as anything that modifies the history event ordering breaks determinism in already-deployed workers.

I see this as Temporal surfacing inherent complexity of the domain in a way that forces the developer to consider it, rather than introducing extra complexity.

If it didn't make workflow determinism a strict requirement, the requirement would still exist - it would just hurt much worse in production when it's broken.

See also: Rust borrowing