It was still a conservative gov that started the tax credit system, yes, it's been changed over the years, the concept was the same.
You're trying to fudge this quite a bit, it was one of New Labours flag ship policies that they championed at every opportunity, at no point was it considered a continuation of an existing Tory policy because at the time it was introduced there was a fall in real wages, it was to Labours attempt to redress that situation.
Wages should be good enough, we shouldn't need tax credits, the fault of major and Thatcher.
So you are doing exactly the same as what you are sniping at others for doing. Labour had 13 years to address the problem but instead changed it into the system we have today and in fact pushed it to the extreme that zero hour contracts become the norm as a sweet spot of working 16 hours was introduced.
You are just as guilty of blaming the previous bosses than those you laugh at.
So yeah, you are just as guilty of talking shit.