C.131: Avoid trivial getters and setters - a request for clarification

I realize that this is a controversial item and that there are already a few inconclusive discussions about it, but I hope that my question may have a clear answer.

Basically, I would like it clarified whether the intended reading of this guideline is

Avoid pairs of trivial getters and trivial setters

or

Avoid trivial getters and avoid trivial setters

and if it's the latter, why?

It seems to me that it is perfectly reasonable to have a trivial getter if the setter is non-trivial (or not present). This does not appear to contradict the reasoning in the item in any way. I'm even thinking that maybe the most direct way to communicate the intent would be

Avoid trivial setters

wouldn't it?