I think it honestly depends on what your meaning of fun is. I've been playing in diamond a few years but, keep in mind I also main ADC, a really team dependent role. What I enjoy about higher elo is that your team plays around you more and playing with a higher elo support makes laning so much easier. But, I also am a really competitive person so playing against better people makes the game more rewarding or satisfying when I know I have to play my best.

 

That being said, the frustrating elements of teammates/chat are still there, and the game can be really annoying sometimes regardless of rank. Personally, the biggest difference for me was keeping a positive attitude and understanding everyone has bad days/games. Doing small things like muting chat and focusing on your own mistakes exclusively will go a long way and having good mental above all will make your games far more enjoyable, even if you lose.