The 8 groups of colors you see on the graph are actually dozens and dozens of parties who group themselves into more compact coalitions depending on their broad ideology. This is actually no issue to get shit done and pass plenty of legislation.
What we actually don't like is that the far right groups (Conservatives and Reformists, and Identity and Democracy, and a third secret option) are growing even a little bit more, which increases the possibility of them actually passing the laws they want.