Learn English – Contrary of “As its/their name indicates”

I would probably use 'would' in a sentence like that if I was discussing something that might or might not happen:

If she goes, it seems as though she would be so far separated from us.

On the other hand, I would be more likely to use the author's construction if it was something that was definitely going to happen, and I was talking about what I thought the result would be:

When she goes, it seems as though she will be so far separated from us.

The use of 'will' indicates that the event is certain to happen, while the weaker 'it seems as though' indicate that the results of that event are subjective and/or uncertain.

It's also worth noting that 'will' does not have to imply a strong certainty. It indicates that the speaker/author has no reason to signal uncertainty, but it's a default option as much as a positive signal. If a positive indication of certainty is needed, most people will add an extra modifier such as 'will definitely' or 'will obviously'.

It began as a particular host's catch phrase some decades ago, and has gradually crept into more general use.

While originally used to make the host's sign-off more memorable (and therefore make the host more memorable), it was a play on the fact that the person's role as the host of the programme you had just been watching was now at an end. Essentially, a short-form of:

"I, Johnny Bloggs, have been your host (and now my role as host is over for now)."

which elides to
"I have been your host, Johnny Bloggs"

which elides to
"I've been Johnny Bloggs"