Xamarin Insights is an essential part of the designs. Since I've been building apps for more than 10 years, I always knew if I had the right tools, tools that shows me what's inside the mind of my users, what are I'm missing in my UI/UX, I will have a strong (less buggy) and more friendly (easy to use) app. Vital.
This NuGet package works well for most of my releases, including simple Xamarin Forms apps.
The code, in pure C#, is very simple to write. The SDK is light weight, though flexible.
Of course, one of the most important aspects is the Dashboard, which shows useful information. Nevertheless, in real life, and from my experience, you'll have to code and use the API in order to get the most of this great "addon" to your Xamarin app. No matter the size (that's important to know).
It's backed up by Microsoft, so it won't just go away, it's solid. You'll just need to be stay informed and updated about changes in both Xamarin and Android SDKs.
The speed could be a bit faster, it isn't essential for most apps, but it may certainly be for a game or a chat system.