It's a good line, that's why the apologists keep using it, but the furore is not about cake and wine.
It's about Johnson making a law, being on television (it seemed like every day) telling people not to break it as lives were at stake, and people following the law to the extent that family members died alone - then lying about having broken that same law multiple times to parliament, refusing to resign for lying in breach of the ministerial code, and becoming the first PM to get sanctioned by the police in office.
It's not that juicy? It's the juiciest scandal involving a Prime Minister in history! It's got death, criminality and moral bankruptcy.
Or it's about cake.