First - I have no idea where you seen "no time". My job is coding and programming and this was a toy project that lasted for a day or two. Have no idea on what you are trying to say.
Second - I bet it will work on 1.18 and lower versions as welll if you are able to use pom.xml and fix just one line of code. Since this plugin is not API version specific.
Third - Did not know that plugin existed. This plugin exists since I did not find that plugin in spigot