In my view, this is essentially the key sentence that the entire blog post builds up to and revolves around.
Honestly, I am fearful of this ideology. What I see, is an author who spends a very long time and many words to explain how, sometimes, truths are "too offensive" or "inconvenient", and therefore sometimes need to be "offered" differently. This is frankly just a problematic ideology.
On the other hand, I concede that a "fact" or "truth", in isolation, can also be problemaric. After all, we have all grown tired of the usual race and crime correlation debates that often devolve into "I'm just stating facts and statistics!" drudgery. However, it's my 2 cents that I think that the author has subscribed to and promotes a somewhat problematic censorship ideology.
Delivering "truth and facts" can be a real tough cookie. I personally find that it is the single hardest thing about my line of work, and I like to think I work on some very complex engineering thingamabobs!
If someone really is wrong, provably, and there needs to be proof (data), because, say they are working on building a bridge and are making important engineering decisions, then what is the author saying you do? Not be an asshole and tell the truth but be "nice and kind" about it? Or, are they saying you lie? Wholly or partly?