I Don’t Buy “Full Stack”
I mostly do servers and that’s a technology easy to keep abreast of. Front end work is volatile as ether and a browser developer needs to specialize, keeping up with the never ending stream of scripting languages, JavaScript anarchy, and more.
It may be possible to do full stack but it strikes me as the epitome of Jack of All Trades, master of none. I don’t believe for one second anyone can be excellent at both without a Newton level IQ.
I’m an excellent server developer. I know just enough browser to touch up calls to my API.