I like LetsEncrypt and wasn't trying to suggest it was a problem. I think the comparison between LetsEncrypt and DNSSEC is instructive; a LetsEncrypt confidentiality failure would be disastrous, and a DNSSEC confidentiality failure... actually wouldn't matter at all, unless someone out there is doing something really creative and dumb with the protocol.
Contrast that with the legacy model and the emailed zip files of cert chains alone would flood the intertubes.