They are talking in respect to Merthur for those who know that Merlin slash...personally I don't ship it, but this reminded me of something else. The actors really don't need to fuel anything for a fandom, it kind of fuels itself somehow. If anything what actors might say or do exacerbates the issue or perhaps (as what I think happens often) the actors are misunderstood.
This man studied Psychology, writes Prose/Poetry, Cares about Animals and the Welfare of People and the Planet, has a Body and Face to die for, is IRISH and FUNNY and seems The Sweetest Thing on Earth, Ladies I give you, EOIN MACKEN! <3 him thoroughly!