I don't think it will ever be "another poll tax" for all sorts of reasons.
It's being phased in gradually, for a start, whereas poll tax affected everyone at once. (Well, almost - it was trialled in Scotland first, then implelemented in rest of the country.)
The poll tax affected everyone, UC only affects people on low incomes.
UC is money people receive, not money they have to pay out.
UC doesn't have the same fundamental unfairness as the poll tax, whereby a multi-millionaire was expected to pay the same as someone on a low income.
There will never the same rage about anything benefit-related, because an awful lot of people regard benefits as "free money" rather than a way of bringing people on low incomes up to a minimum standard. There is a climate where there is a lack of sympathy for people who need to claim benefits.
And UC is not all bad. For many people, it will be easier to manage one payment, or 2 if they are working, than the complicated system under legacy benefits whereby money came in in dribs and drabs throughout the month.
It has been appallingly mismanaged, and for many will result in them being quite a lot worse off, especially those who are ill or disabled. But in Daily Mail world, they're all scroungers and skivers anyway, so Daily Mail-ites won't give a shit. But legacy benefits weren't without their problems either, and at least people are a lot less likely to be hit with big overpayment demands under UC.
So it's a "no" from me.