This is where people who hate toffs, manage to completely lose their argument.
Said person who can afford to waste money on a Porche, will also pay, on a lets say £150k porche, £30k tax......... thats more than the tax contribution of about 4 "average uk workers". On that car alone, they will also pay more tax on the bigger house they buy, and more council tax, and more tax on the more expensive clothes they buy, and more tax on the extra fuel the Porche takes to run, and by buying a Porche, helps keep the people who work for Porche in jobs, helps keep the larger team of builders in work as they build his big mansion and pays their salarys.
People who think rich people don't pay enough tax are barking mad.