Oh, no, it wasn't you. People have been saying it all day. I've never heard Dallas mentioned even once, just Houston. Sorry if it sounded like I was blaming you - my rant was cumulative - directed at the "they" who do it all the time.
YnetNews
It may be the map design and our tendency to read left to right too. That is how I made the mistake the first time. Depending on the city you first read. IIRC, Houston's list is actually to the left, and Dallas' list is to the right between Dallas and Houston.
Of course, some people may not know the difference between the two cities. If they would visit there, there would be no doubt as to the difference. (Like LA and SF)