Well, you're talking about cable and satellite.... nothing has recently changed, at least not that much, in how the networks (specifically) cover sports, nor in how cable and satellite services (specifically) carry HD channels. Most of them have been carrying sports, especially, in HD for years, already. I wouldn't expect things to change.
And your concerns are not very common, which makes me think that it might be issues with the various HDTVs that you and your parents have. Do you all perhaps have the same HDTVs, or more properly, which models do each of you have? I can check into them to see if the problems you're seeing are common complaints for those displays.