This is not specific to Umami, but I always find it puzzling people call all kinds of things, which are only a minor step up from the visitor counters from the 90ies a "Google Analytics alternative".

In my eyes, website analytics tool is not an analytics tool if it does not, as a minimum, have proper segmentation and funnel tools. If all you need are some hits and visit numbers, you do not need an "active" component at all and could mostly rely on website log analysis anyway, like http://www.webalizer.org/ - but yes, probably less shiny than the current "GA alternatives".

One draw back of everything that isn't Google Analytics is that they can't provide Google search query, which is extremely important for most site