Defining a conspiracy theory - and explaining why the term is now so commonly-used

After observing the usage of the 'conspiracy theory' slur by the modern media and officialdom; I have realised that it has a simple definition.

Conspiracy theory is a term used by The Establishment or its servants to characterise any explanation that assumes malign intent by The Establishment or its servants.

Since The Establishment is indeed of malign intent on average and overall; it can be seen that many true theories will be characterised as conspiracy theories; and as The Establishment becomes more powerful, more-and-more true theories will be labelled conspiracy theories.

This presumably explains why the term "conspiracy theory" has become so much commoner over the past few months.

Five Year Google Trends in usage of "conspiracy theory"