73 MEPs. How many British bureacrats, you cannot exclude them.
Anyway, that is no different to almost any other parliament, including our own. How many Scots Nats, Plaid Cymru, various Irish parties, Lib Dems etc etc . How representative is our current leading political party, or the main opposition of the country as a whole.
How representative are those who voted Brexit ? 17.4 million voted out, 16.1 voted remain and 12.9 million didn't vote at all. When most votes are this close the views of the minority are usually taken into account, in deciding how the majority vote should be implemented. I have yet to hear a single Brexiteer accept that the opinions of the 16.1 deserve to be considered.
As I said, as far as Brexiteers are concerned it is 'I'm alright Jack' (and b*gger take the hindmost)