In the main home feed, we merge all the content types (post, question, discussion, article) in one place. This change is implemented in all feeds including home feed, topic feed, group feed, and user profile feed. The content you see on the main feed is generated based on the topics you are following. If you are not following enough topics or there is not much content on the topics you follow, you will see all the contents posted on the community based on the time they are published.
However, you can filter the contents on your home feed based on their type, using the dropdown on the top-left of the feed.