It's measurable.
In my country we have a central test for kids at various age, and reading comprehension is also measured. Every age group is doing worse and worse every time.
It's mind blowing to me, as a kis I didn't understand the point of the test, like you read an A4 page or two and answer questions about the text, that is literally in the text right there, it felt pointless. Well as it turns out it's not.
We are literally getting worse and worse understanding what we read. The future is scary.
While I agree, it is important to note that Valve is a private company. When you don't have to please shareholders and do absolutely everything to increase revenue, there is possibility for a level-headed leader that keeps the company customer friendly.
But if anything changes (greed takes over or leadership changes), it could still turn.