Linux is certainly NOT bug-free… Anyone will certainly hit bugs that could potentially be blockers for some scenarios. This is not unlike other operating systems though.
These last 3 years have made Linux A LOT better. Intel and AMD have invested a lot of money and time to tweak the Linux experience recently. NVidia is still lagging behind on that but they have promised some great open source news for Linux on March (let’s hope for the better but considering it is NVidia don’t expect too much).
Recently it is easy to have a fully functional setup for:
- Local development (I’d argue it is the best in the market with all editors + language servers + docker and so on);
- Multi monitor (both HDMI and Display Port have a good enough support currently - even thunderbolt 3);
- Games (Mainly Steam with Proton that is based on open source Wine);
- And all the crazy stuff you usually only get on Linux like i3 window manager and so on…
Other than the current experience there is the issue of being free and open. We should support more open source that is the base of most of our work (Elixir is open and so is Erlang…). But this is somewhat political so let’s not get into it 
This is very subjective but in my experience there is nothing that I miss from any other OS.
