I was just cleaning up my hard drive and noticed that Unity Hub actually is 171 MB. Looking at what it does and thinking about it, I just can not see how a tool like this is so big. I would think its functionality could be compiled into something that is no bigger than 170 kilobyte. So why is it soooo big? My guess is, that to make it some software was used which does not give a damn for size, speed and optimization in general. Please consider to not use such poor tools to make your own tools. Your tools will become just as poor. I'm not saying you have to fight for every byte, but 171 MB for Unity Hub is just way too much.