Their plan is front loaded - meaning that the first 23 months of payments on a 25 year plan are taken as fees. however this is not made clear - particularly by the dodgy advisers who hawk this junk - because they earn most of that as commissions.
There are also significant other fees, especially if you choose to stop paying in regularly or decide to terminate the plan.
So they basically lock clients into a plan where they are guaranteed income - either from the yield destroying fees or from the aggressive exit fees - which can be up to a full 100% of money invested. And this is marketed as a "Savings" plan ?