I think it turns out that we have the ability of verbal communication, given to us by the evolution of species. It is quite normal to expect to be very communicative as normal human beings are. Introverts just communicate predominantly in a different way and does not mean that progress could be stopped or slowed down.
Specifically the software industry is about being loud. Speak loud about that feature that you could complete, speak about how you are driving a whole team to reach goals, and I only think about all the tech jargon that is used every day with the only purpose to disclose all the knowledge and give us a status quo and a classification between novice and expert.
How could you gain status quo if you do not show all that you got?. It all depends of ego.
I suppose a big part of my article is about articulating that not being "loud" (as I define it in the article) does not mean that you should not advocate for your viewpoint. It's all about how you do it.
You can be a "squeaky wheel" for desired features without being obnoxious and abusive ("loud") towards the product teams. The chances are higher that your desires will be more sympathetically entertained if you are civil in making your desires known to product managers.
I'll grant that product managers will often still listen even to "loud" people. It's their job to overlook that sort of bad behavior, but having been a product manager myself, I can still attest that they are human beings and are happier to accommodate pleasant customers than abusive ones.
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