>I believe opening within Emacs should be the default - as many Emacs users aim to do everything within Emacs.

I believe it's actually only a very vocal, very misguided minority that tries to do everything in emacs. Emacs is objectively inferior to existing alternatives for:

- IMAP

- viewing and especially annotating PDFs

- Browsing the web

- working with LLM agents

- multiplayer text editing (crdt.el is trash)

- working with rich text documents like .docx

- working with spreadsheets

- notebook rendering (org vs md and jupyter are definitely a "worse is better" situation)

etc.

It is not sane to assume the user wants to do everything in emacs. Emacs is bad at lots of things and that's okay.