Yes, for the past 25 years, "tax" rises have been aimed more at workers rather than across the board, and it;s now reached the limit. NIC has been the "tax" that's risen most, but of course, that only affects workers. It doesn't affect pensioners or buy to let investors or those living on investment or foreign income. NIC needs to be broadened to include ALL sources of income, either that, or scrapped and income tax raised instead.
Again, for 25 years, politicians/governments of both colours have encouraged/incentivised tax savings, i.e. ISAs, SIPPS, dividend tax free allowance, interest tax free allowance, raising the personal tax allowance above inflation. It's sent the wrong message that it's good not to pay tax. That's caused a whole load of human behaviour issues that has meant more and more people don't want to pay tax, at all, or minimise it. That's led to "cash in hand" working, black economy, etc. Government message should have been that paying tax is good as it pays for services. However, starting with Brown/Blair, the message has been to avoid tax!
Even people who don't pay income tax/NIC now resent paying tax!! My MIL is a case in point, her income is below the personal allowance - she used to pay tax but now she doesn't. Yet she still goes on and on about how "her" tax payments are paying for benefits etc. - it's just her mindset - she thinks she's paying tax even though she isn't and still begrudges it!
Everyone's mindset needs to be changed. We need a simpler/fairer tax system. It needs to be "normal" that people pay tax, even the lower earners, and even if it's at a much lower rate. I'd go for several tiers starting at 10%, then 20, 30, 40, so more people pay, but pay at a much lower rate.