What about the message grates on you?
Community has always used a heavy-handed pathos to even out the wacky eccentrics. It's the Arrested Development format that every show from Community to Parks and Recs has used. Like Alan Sepinwall said(paraphrased):
"There are 2 kinds of shows on TV: Pathos driven comedies like Arrested Development and Anti Hero Dramas like Sopranos."
Mixology Certification happens to do the former exceptionally well. Be it the pangs of deceit/anger/jealousy/disappointment that flicker across Troy's face all within a split second when he finds out Britta kissed Jeff again or the hilariously disheartening realization that Jeff/Britta were talking about the same bar. That episode was what made Remedial Chaos so damn defining. It was one of the first times we got to see them as people, flaws and all, and turns out Troy is the good one.
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Realo won gold at the Sex Olympics with a BROKEN FRIGGIN NECK.-Voltch