Yeah the fediverse has lower engagement all around because the community is a lot smaller. This is especially true in "long tail" communities. However, the upside is that there are no bots, dark patterns, or manipulated feeds.
That being said, while I appreciate the chronological feed I do wish there was some way to "weigh" less active communities so that I can see their activity in my feed without them being drowned out by the busier communities. I've noticed that I've gone to communities that I'm definitely subscribed to, and seen that there were several posts that I missed because the posts were drowned out by content in busy communities like, for instance, technology@beehaw.org