The docxtemplater recipe was our initial "quick win" to support docx format by wrapping already existing library docxtemplater. This was always shipped just as a custom extension.
In time we realize we can do better by implementing our own docx engine using handlebars and all the features we already have in jsreport - assets, localization, components... This was shipped as docx recipe. This recipe soon became the main part of the jsreport with pptx recipe and xlsx recipe which uses the same approach - typing handlebars inside the office app.
The docx is now one of the main assets of jsreport and has the similiar popularity as pdf rendering promising long life and main support.
So you should use the new office recipes docx, pptx and xlsx which are part of the default installation.