Uninstalling Avast Mobile

First off i want to say i do no have AMS installed yet. I am considering it, but through friends and others i have come across, I hear nightmare stories about Avast and trying to uninstall it form a phone. From not being able, to still leaving some files/apps on your phone.

Is it easily accomplished or are these nightmare stories i hear, true?

Now by uninstalling, i mean uninstalling everything that is avast, from my phone. Why do i ask completely unistalling Avast? Well if i don’t like it then I would like to remove it completely from my phone.

https://support.avast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=1034