It was a question, but unless you've run a web site it wasn't obvious how it worked - so not really so stupid.
I bet theres plenty of people who use HN emai instead of alternates..l. If I didnt have my domain, I would prob would be using the HN email address.
I'm sure there are, but that doesn't necessarily mean that they won't eliminate their email at some point in the future. I'm sure that if/when they do, they'll give far advanced notice.
BTW, to expand on what I mean, not only has Hughes' direct competition eliminated their email service, some other small providers have done the same. With the way things are, it's very possible, and nearly likely, that the larger providers will start going the same way. It's becoming less and less of a necessary thing for them to provide, and with more people using those free providers, both because of the fact that, again, you can "take it with you", and that they tend to have more expansive abilities and are often bundled with other free services, such as cloud storage, the writing may very well be on the wall, so to speak. Time will tell.