I agree with your fundamental point that making the assumptions about what colleagues will have to do can be dangerous, though I would still challenge your earl

I agree with your fundamental point that making the assumptions about what colleagues will have to do can be dangerous, though I would still challenge your earlier suggestion that apparently simple things “frequently” have huge ramifications. It’s sensible and polite to acknowledge the possibility, but if trivial-seeming changes are getting push back more than occasionally, IME that probably indicates a more serious underlying problem with how the project is being built.