I'm not sure what you mean for outdated skills? Where I work we don't usually hire for tech stack or languages, we test more design pattern, principles, archite

I'm not sure what you mean for outdated skills? Where I work we don't usually hire for tech stack or languages, we test more design pattern, principles, architectural knowledge even knowledge about paradigms, which are like not things that change often, I guess you have to know what pattern becomes an antipattern. I think maybe you might have found some javascript developers that to me have always felt very stuck and introvert(?) with their tech stack or last framework hunting, but I think to be able to give you an informed opinion one should know also what kind of knowledge you have and what have you built, and what kind of positions you're applying to