[chrismorgan]

Nah, it’s radically different.

No browser disables JavaScript by default, and disabling it is never a first-class feature: you have to manually figure out when it’s broken things and decide what to do with it.

Meanwhile, there are comparatively major webmail and desktop clients that disable remote image loading by default (e.g. Fastmail’s webmail and I think Thunderbird on the desktop), and all significant clients at least support disabling loading remote images. And in such cases, if any remote image is blocked, the client will put a “remote images blocked” banner with a button to load remote images. This is a first-class feature of email clients.