Gerben Wierda schrieb am 22.07.2021 um 08:43:

So, basically, the page on ConTeXt garden about using older modules in LMTX is incomplete: not all modules actually work.

Many of the modules on the garden are 10 years and older and predate MkIV/LuaTeX.

A lot has changed since then and LMTX added many new commands which replaced
older mechanism. There is no way all modules can work after these changes
(especially modules which add font support in MkII).

Wolfgang