Poppycock. The poor pay plenty of taxes... sales tax/VAT, SSI/employment tax, property tax (on cars, in some areas).
You know exactly what is meant by "tax haven". Playing semantic games doesn't make the practice of shifting wealth to avoid taxes any less unsavory, even if it is legal.
Hate to keep repeating it but everybody arranges their affairs to minimize their tax bill thereby avoiding tax. It's not only legal, it's sensible. The government sets the rules (and changes or repeals them if it wishes) and good citizens obey them to the letter. If there's a highly devious suspect scheme afoot to minimize tax, the courts are there to examine it and make a judgement; if it is deemed to be tax evasion then serious consequences will and should follow.
Anyway, I'd just as soon do away with market-distorting tax code like tax-advantaged retirement accounts, mortgage interest deductions, etc and just lower the marginal rates accordingly.
The UK could also become a monarchy again, or it could try to invade France. This is crazy agenda-driven speculation that belongs on Breitbart or DailyKos, not Hacker news.