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As with any language fork there will be some who stay and others who switch to the new thing. Often a fork will drive people away from a particular language as in my case.
For that reason luajit staying at ~5.1 actually works in its favor. Rather than trying to follow the moving target of the newest version, it gives a robust focal point for the lua ecosystem, while modern versions can be developed and continue to serve their purpose in embedded systems and whatnot where appropriate.
C is a language like that but I fear the feature creep is coming (auto? AUTO??.) JS is a lost cause.
Good news, you're someone. If you care, you're welcome to go for it.