If you look at an aggregator like [0] you see 10-15 new posts a day, which actually isn't a bad level of activity. But it's all just people's personal blogs. Which is fine and, again, is probably how it is intended to be. But unless you have a personal connection to these people or happen to be intensely interested in all the same things as them, it's difficult to stay interested in their personal blogs.
Things you don't really find in Geminispace (unless it is mirrored or proxied from the web):
- news or serious journalism
- any kind of social media
- any kind of interactive content
- any kind of multimedia content
Some of that is due to inherent and very intentional limitations of the protocol. Some of it is just due to the community being much smaller (ie, the web has plenty of interesting text-only content that could be on Gemini, but is not).
I still like Gemini and will continue to browse it, and it's important to point out again that it was never intended to replace the web. But I remember to check in on it less frequently now and it seems I am not alone.
0: gemini://warmedal.se/~antenna/