Re: Got what they wanted
That's certainly true. It was a one-off joke / social media thingy, that will pass and nobody will remember. But of course, there is ongoing free publicity. They'll be able to get at least their first 2 or 3 press releases decent publicity on the back of the name alone, so if they ration them carefully they could get something useful from it.
Of course, there's also the downside of, "it is with regret that we have to announce the sinking of the RRS Boaty McBoatface - all her crew are feared lost."
I guess as a compromise they could give it a "proper" name, then paint a big face on the front, so everyone knows what it's really called. And I'd be surprised if the crew don't end up calling it Boaty McBoatface anyway.
Or perhaps a compromise. Go for an Iain Banks theme, and call it Grey Area. That gives the crew an even better nickname.