Title should be the original + date at least:
Reliability: it's not great (2023)
So all in all, fly.io is pulling ahead in my view :p
I have to assume they made similarly confused choices with their Consul and Nomad setups as well. No wonder they are having issues.
I found their explanation about why they wrote Corrosion confusing since most Hashicorp services (including Consul) already support data sync via a gossip-based protocol (Serf).