In my experience (talking FreePascal/Lazarus here, as I'm on Linux most of the time), the library situation is not that bad, actually. The standard lib has most of the mundane stuff, and a little github-searching can often find a working version of more specific stuff (like SSH2 which I needed recently).

To the contrary, in some areas (like GUI tooling) it is far far beyond newer alternatives like Go.

Also, I think the higher level of the language than C/C++ etc can make it easier to develop your own solution, should you have to.