I don't want to be a gatekeeper, but Clojure, Janet and similars doesn't even have cons cells; that's hardly 'the same programming language'.
47 karma · joined June 19, 2012
Not sure why would you want a single-process OS on modern hardware, but there are some alternatives that run much less things on the background than regular Linux: Haiku, FreeBSD, NetBSD, OpenBSD, or some lightweight non-glibc, non-systemd Linux-based like Adelie or Alpine.
I like being able to read my bookmarks a week, or even a month later.
But I think the author is using Chrome under emulation, so bad performance is expected.