It seems like every episode is "horrible," "awful," "the worst ever," "this show is dead," when, let's be honest, most episodes are still average at worst. They're just not up to their brilliant quality they were so people exaggerate.
I can definitely see your point, and I haven't actually seen the most recent episode yet, but every other episode this season has actually been really damn funny imo. There definitely used to be less average episodes, but I think this season's been doing well for the most part (aside from 'I Should Have Never Gone Ziplining'. Episode was horribly boring).