Safari isn't exactly non-major. By the way, it seems like WebKit Embedded (~resource-efficient Linux port) has regained some steam due to Igalia's work over the last two years or so.

Brave still supports UBo though. How long they can maintain that support is an open question.

A single engine/implementation deprecated the feature. I don’t think this is particularly misleading in a hacker news context.

Every major browser except Firefox is Chrome