In my recent travels, most of the concrete5 links (by far the largest Google results are legacy). lead to 404 not found errors.
Especially if you try it in a new Private Window, Brave, Tor Browser.
Things like How to Upgrade Concrete5 took a VERY long time to load.
Maybe the servers were being updated, so this was just my experience at the time.
If I set any marketplace filters (such as recent & free), clicking on page 2 or next, the filters are disregarded.
None of these can be good for concrete CMS in the future…
When are profiles going to show their addons/themes?
I understand growing/changing pains, but none of this can be good for concrete CMS, nor developers!