Again, "until they get to the house" as opposed to "the point where they _enter_ the house" is very different. In terms of who is responsible for what and what that means to the homeowner, that difference is huge. It would have been OK for you to say that you were wrong instead of claiming most people knew what you meant, but the reason you didn't do that is a not a home-repair related discussion.
Keep in mind that the OP didn't appear to know that the utility is responsible for the trimming of trees near their wires in the first place, so any response related to that issue is new information to him. For that reason, he would not be included in the "most people know what I meant" group. It is our responsibility to be as accurate as possible with information related to his issue so as not to lead him astray. My response to your post was to simply set the record straight as to where the utility company's responsibility "typically" ends.