[dignifiedquire]

While rpgp is slowly gaining support for this format (the aid users to be able to talk to anyone they want) it will keep emitting the broadest compatible format for a while by default, until the whole ecosystem has upgraded. The aggressive stance from gnupg is really hurting people and removes one of the biggest benefits of pgp, broad interop with compliant implementations.

[upofadown]

Each faction has a seemingly legitimate position. My understanding is that there are no cryptographic weaknesses in the existing block cipher mode (SEIP) so there are no downsides to just doing that indefinitely.