The purpose of language is communication. English is an unusual language in that it is a fusion of two dissimilar ancient languages and that it is possible to communicate in structures that originate from either of these languages.
One source of English is the old German imported by the Angles, Saxons and Danes. This is characterised by meaning being transmitted by using short particles, The other source is Norman French which, originating from Latinate sources, is inflective and multisyllabic. There was a social divide between the language users - the serfs and common people using old German and the aristocracy using Norman French. One consequence of this is displayed by food names - beef, mutton and pork - eaten by the aristocrats, but the animals - oxen, sheep and pigs - were raised by the serfs.
There is a belief - largely held by people who are out of touch from reality or who are driven to demonstrate their intellectual superiority of others - that the more complex language they use the higher their status. I suspect that Mr Rees-Mogg subscribes to this view. He is more likely to say meretricious sesquipedalianism than bullshit baffles brains.
Which, Mr Spud, do you find easier to understand?