Comment by yjftsjthsd-h

Sure, there are a handful of useful points there (off the top of my head: it's possible to work around this failure by using multiple CAs, multiple free ACME CAs exist, caddy implements this solution). I'm just 1. slightly frustrated that caddy's author never seems to miss a chance for self-promotion (at least he's started alluding to the fact that it's his project), and 2. actually curious whether any other ACME clients are implementing that fallback.