Is Gmod dying

I have been playing GMOD since 2012. I can without a doubt promise you it is dying. The remaining servers are still the popular ones fgrom way back when I use to play I.E Superior Servers etc. There use to be more servers than players;not anymore. The game is slowly dying but I feel it will be remade in the form of S&box (Gmod in unity engine with a different language and more functionality). It has been in development for years and I can only predict for one or two more before it is released.
That is my take on it!