Yep, the hurdle is contentious to say the least. It was established to prevent a repeat of the Weimar Republic where the splintering made parliament incapable of doing anything productive (after which the 1930s happened). You are correct though that having small parties represented in parliament does have its advantages which we’re missing out on.

Didn’t want to imply your system is bad or anything, far be it from me. A four party coalition just looks unusual from where I am, that’s all I wanted to express :)