I have a 500PB Ceph setup @ work, but I don't maintain it. It's been solid.
I would say no in production. I was recently testing a ceph + rgw as an on prem s3 solution, but high throughput puts + ls caused an index corruption that “lost” files according to future LS’s, the file was still there if you directly get it. When this was reported it was already found multiple years ago, and never fixed
Could you reference a bug url? I tried to find it via tracker.ceph.com but failed to do so (I don't claim that the problem doesn't exist). That said referencing a bug url would be nice if you want to increase credibility of your claim.
I know this bug has hampered our use of ceph at singlestore. Note that this is not an eventual consistency issue. When it happens the list command will permanently miss files.