while not every comment deserves a reply, or your attention, silencing every opposing viewpoint is a great way to end up isolated and without contextual diversity.
I read the comment as being about silencing low value noise from the knee jerk “this news doesn’t mean anything because companies bad news fake nothing to see here” crowd.
If an opposing viewpoint doesn’t have any thoughtful, well reasoned proponents, maybe it’s not that interesting of a viewpoint?
I only recommend people blocking things that they can't handle. If you can't handle opposing viewpoints, that's a big problem, but telling you that you can solve that problem by forcing yourself to be exposed to them is mistaking the symptom for the disease. The cure for that isn't to read opposing opinions but to read arguments as to why emotional reactions to such things is not the path to a well examined life.
If an opposing viewpoint doesn’t have any thoughtful, well reasoned proponents, maybe it’s not that interesting of a viewpoint?