The blurb suggests that this person writes specifically altruist articles (a suggestion that this is for the benefit of someone which by proxy suggests that it’s telling the truth). Because opinions are subjective that conflicts with the context of the piece pretty harshly. It gives the idea that it may in some way be an opinion based in on fact when it simply isn’t because it cites no factual data that can be quantified whatsoever. This is literally how misinformation is spread. It doesn’t have to be outright lies in order to be damaging.