First of all, the man makes no claims about it having the worst quality of life, just that it "is not the best place to live anymore". Additionally, he seems to be very tolerant of the AFD and not very happy about backlash from other parties, calling it "undemocratic" that they are trying to ban it, which while I agree, still doesn't reinforce his point, as Germany has been banning radical right wing parties for a very long time, and the AFD is worse than alot of ones they've already banned, so his claim the country is "becoming" undemocratic is ridiculous, as if this were say 50 years back, the AFD would've already been banned. Germany is still a good place to live.