"I misspoke" is becoming a very convenient way to say you were either lying or being honest about your true position on an issue. Luxon misspoke about wanting to dry-hump the US over Iran; Stanford misspeaking here about scare stats.
"misspoke" is just weasel code.

Immigration Minister Erica Stanford apologises after inflating overstayer figures https://www.rnz.co.nz/news/political/588661/immigration-minister-erica-stanford-apologises-after-inflating-overstayer-figures