Of this change, Barry Schwartz of Search Engine Land says:
"This was a popular feature for India based Google Search users. I believe this grew into what we now call the Question Hub, which is a great source of content ideas for publishers.
That being said, Google is constantly testing new features, and adapting those features based on how searchers use them. Since the Google Question Hub is not going away, I suspect some of the Q&A on Google might be replaced with the Question Hub functionality."
In short, while this specific feature may be going away, the Question Hub still remains a potential source of content ideas for publishers who are always on the hunt for something new to create content about, that meets an audience demand, before their competitors do.
It also shows a continued refinement around the concept of what it means to do inbound marketing well, where you (as companies) rely upon jaw-dropping educational content to drive traffic, leads, and sales. More specifically, what you publish has to be centered around the needs of your buyers and the questions they are seeking answers to – not simply the questions you feel comfortable addressing.