"You're not publishing full investigative journalism articles on absolutely everything." is not a valid criticism of your article, or a reasonable criticism of the publisher.
ProPublica can't be expected to do all the work of uncovering all sides of the truth. They already do the hardest work: uncovering what the powerful would rather that we not know. They do enough; what are the rest of us doing?
I would agree that it's historically been uncommon for the media to give balanced perspective on civilizational progress, but some good sources for this have emerged in recent years. One of my favorites is Works in Progress magazine: https://worksinprogress.co/