There's reputation then there's reputation...
I regularly use certain Stack Exchange sites, but was entirely oblivious to these goings-on. The article was, therefore, eye opening and I welcome it.
Personally, I see no need or place for pronouns, at least on the sites I use, and (given current ridiculous social norms) feel I should be offended on behalf of people who see pronouns as divisive. But honestly, meh.
In terms of the Stack Overview/Stack Exchange reputation, it has taken a dent but for me it is almost all about user generated content anyway so really is more about the quality of posting than any mutterings from corporate.
Regarding user reputation, as @jglathe said, it is really, really hard work to build reputation on the sites I use. You find old hands with 8+ years up in the 100000s of points and folk who joined more recently (1-3 years) but regularly post down in the really low 1000s even after what is clearly a really concerted attempt to flood the sites with nuggets of their learning and experience. This is, I suspect, simply down to the fact that the old hands were in on the ground floor, answering the "low hanging fruit" questions that naturally gain additional votes over time. In addition, as the sites have matured the questions generally have become more niche (since search engine(s) results cover those earlier questions well) and therefore attract less reputation, which is a shame.