The "built-in to Windows" one is essentially feature frozen and "dead". It's a bit like the situation where a bunch of Linux distros for a long while included a "hidden" Python 2 for internal scripts and last chance backwards compatibility even despite Python 3 supposed to be primary in the distro and Python 2 out of support.

Except this is also worse because this is the same Microsoft commitment to backwards compatibility of "dead languages" that leads to things like the VB6 runtime still being included in Windows 11 despite the real security support for the language itself and writing new applications in it having ended entirely in the Windows XP era. (Or the approximately millions of side-by-side "Visual C++ Redistributables" in every Windows install. Or keeping the Windows Scripting Host and support for terribly old dialects of VBScript and JScript around all these decades later, even after being known mostly as a security vulnerability and malware vector for most of those same decades.)

Exactly the reason why The Year of Desktop Linux has become a meme, and apparently it is easier to translate Win32 calls than convince game devs already targeting POSIX like platforms to take GNU/Linux into account.

JScript is still a proper programming language and isn't Electron sized. Also hta that did electron before google was planned.