DPRK has considered Israel to be an illegal state and it to be a satellite of the US since the 1980s. Every month or so, DPRK releases a press statement condemning Israel's war crimes. The last one I see posted was on July 6. I read the DPRK-hosted website almost every day.

The statement about DPRK implementing a new death penalty law for promoting Zionism seems like fake news. If such a law exists in DPRK, it wouldn't be a recent law as the instagram post is from July 15 and says "North Korea has passed a new law". I don't see it mentioned on any of DPRK's websites.

Below is an article from October 13 2023 from DPRK which says that the US is responsible for Israel's attack on Gaza. "The reality clearly proves that the U.S. is not a 'mediator' but a wrecker of Middle East peace and it is not a partner but a foe of Arab."

https://web.archive.org/web/20231013220121/http://kcna.kp/en/article/q/aa4df265dc7ce03ee512204d1071fd47.kcmsf