Pregmod doesn't use the Milestone system at all, and we use Tags only because that's the easiest way to trigger the autorelease system (and even that only started a couple months ago). The best indicator of actual activity is probably the commit graph, from which you can see that there's substantially more activity recently than in the last few months:As I said, "From the tags". I'm using the metric the GitHub system uses to measure progress milestones. If the contributors are working behind the scenes, that's great.
If you play prebuilt releases it's been a bit quiet, but that's just because there's a bigger one than normal cooking right now.
Next you're going to tell me that you actually believe the Changelog too, lol (protip: new mechanics, content, and sometimes even entire systems get released without ever seeing a Changelog entry...updating is like Christmas, you never know what you're gonna get unless you've been watching the elves really carefully).