Sure, but I've figured out multiple Paradox game UIs, put many hours into a bunch of weird old crufty DOS games (Dominus, anyone? Darklands?), ran Gentoo as my main OS for several years (while preferring Windowmaker as my WM, for god's sake, hahaha)... and still got myself turned around in Kodi sometimes after many hours using it, in a way I never did in Netflix's UI (any of their UIs).

Kodi's got some really weird UI choices going on. I don't think it's the case that Netflix-alike UIs are anywhere near equivalently bad, but people are able to use them anyway just due to familiarity. I think Kodi's is simply a lot worse.

Even the parts of Jellyfin that don't resemble Netflix (as there's no user-facing equivalent in Netflix)—the server & library management portions—I find vastly easier to use than Kodi's equivalents.