just emerged on English-speaking sites
Maybe because I've posted this theory from my previous post on netflixwitcher reddit several hours ago along with link to the interview

(I am active on reddit under alias Rantsir)
I never heard of this "Witcher" universe before but seems rather big and popular...)
it is. Also my favourite books ever. Unfortunately Netflix is mercilessly butchering it in their series with idiotic and illogical changes to the story which is almost unrecognizable in season 2, but if Dolph is playing Bonhart, I can take it and I will watch it to the end

But if he's not Bonhart, then I will be seriously disappointed.