Buying backlinks is frowned upon, and I hear a lot that it's bad news - I read an article of a guy who's been doing SEO for something like 25 years. He goes by the mentality of "If SEO didn't exist, would you still be happy that this website has linked to you?"
So I suppose my question is, with guest posts - you can get relevant links, from... the telegraph for example, a huge huge company with something like 95 DA. I mean, a follow link from somewhere like this - is clearly something you'd still want if SEO didn't exist.
When people say 'buying backlinks is bad' are they referring to PBN's, and blogs which have no relevance, going overboard and buying too many so it looks ridiculously unnatural, or, just in general buying is bad full stop?