It wasn’t about the one line of dialogue, but rather Peter Dinklage’s entire delivery sounding unconvincing. I read about it on these other sites as well.
The reaction wasn’t about one line of dialogue. It was about the overall delivery of Dinklage’s lines sounding wooden, which can be somewhat jarring for some people. For me personally, it broke immersion, in a game that is asking you to invest a lot in the world it creates. The thing about people reacting to this is that it might be what forced Bungie to update the voice acting, which shows that demanding more has results. Plant/zombie warfare and things of that nature are acceptable, because they establish a setting with clear rules. If Destiny wants to be taken seriously, as it appears, then better voice acting should be incorporated.