Re: It's not a tax ...
I fear you complete misunderstand what's really going on here. There are very, very few actual holes in the laws they passed because most of the holes were intentional.
What's stirred them into mock outrage is multiple realisations:
Half the MP scum realising that their friends and financial supporters aren't the only ones benefiting (as intended). They aren't in control of the handouts any longer.
That they've botched the whole bent enterprise so badly it's now possible to completely avoid contributing any value back to the country even as a side effect - and that removes the fiction they justified much of the plan with.
That the public have started asking awkward questions that won't stop at preventing excessive avoidance, killing quite a few retirement directorships for the crooks in parliament if their 'friends' actually end up paying tax.
The system is working almost as planned, they just expected not to get caught. ES has done us a big favour, by being so open and outspoken the politicians are forced to respond and not just with the usual bullshit. They need to decide whether the things they said to justify enticing internationals to the UK with tax reductions are bullshit or real, but neither position is compatible with the squealing complaints now emitting from parliament.