You're reading a lot into the headline and not the explanation. For overcommunicating, the real nugget IMO is:

> A lot of people mistake activity for productivity

I've worked with a few of these people, and they generally tend to be very active on slack/email, make their way into meetings and ensure they're involved in "the process", while derailing every single one of those conversations into tangents, and then slide off into the next cycle of meetings and talking.

> How is promoting your own achievements a bad thing in the context of overcoming obstacles?

I think you're taking the article to the extreme here a little bit. Again, these problematic people tend to be the ones who talk about how involved they were on system X at $PREV_JOB, and if we need to do something like it again we should talk to them about it. It's not about saying "hey I crushed it this year, here's N things i did really well", it's people who deflect their current lack of progress and work by pointing at their previous achievements.

I wish I didn't know this from past experience, but I do....

I hear you; I also had similar experiences. At the same time, I've had bad experiences with people who never, ever, communicate, to the point that one starts wondering if they're alive. That doesn't help teamwork either.

I believe the whole post is more of a projective test than anything else: people read it how they want to read it, because it's vague and full of generalizations.