Then you should also quote the last Labour-government term which also offered high net worth individuals a path to citizen ship, which is also the norm amongst our peers. As long as key requirements are met, then there is no issue. It is not and has never been the case under any administration, of a high net worth individual simply making a payment for citizenship.
We certainly do not have a strong economy, and the pefu clearly demonstrates that, let alone the unemployment rate and requirements for massive fiscal stimulants to be injected into the economy.
Given your mention of the NZX on a previous post, Trump also likes to quote stock markets as a sign of a strong economy, but the reality is these markets are higher due to near zero (or perhaps negative soon) interest rates, housing has followed upwards for a similar reason (although I had thought that Labour were trying to reign in increasing house prices and now it's a positive thing?). There are far more factors at play.