You posted to reddit and got a toxic response? Frankly I'm not sure that's a reflection on F# or reddit. I've been a member on reddit for years yet rarely vote or comment. Whenever I post something, seemed like all I ever got was abuse. Who knows? Perhaps reddit has changed.
As for F#, I've been using it since beta. All I did was get the books and slog through them. Coming from a strong OOP background, I had quite a bit of "this makes my head hurt!" before the light started coming on, but once I came to grips with the power of the language, I didn't look back.
Yes, not all libraries are available on linux. I program F# almost exclusively on linux, and that doesn't bother me at all. The number of libraries that are available, compared to other platforms, is astounding. A couple of times I needed some kind of weird library, so I went and found an open source windows F# version (or C# version, gotta love CLR), then just added the project to my solution. Presto chango, I built both projects at the same time and got a huge amount of functionality for the price of an hour or so downloading code and building it.
(disclaimer: I write microservices any more. No GUIs)
Biggest problem I have with my set up is remembering some of the switches and tweaks to get the thing to build. My code runs so great without my having to horse around with it, so it might be months between getting out the tools. That's usually a couple of hours of banging my head against the wall, but once I've got the build cycle nailed, it's a sweet setup. Best I've used in a long time.