Yisrael M. Eliashiv, the author of the article, is a Rabbi who appears to have Zionist leanings ( just for reference, there are religious Jews in Israel who are anti-Zionist), whose political affiliation is unknown. Based on these snippets of data, it is likely that he is affiliated in some way with a religious Zionist movement within Israel, a tiny segment of Israel's Jewish population. Even within this movement, there is no indication that his personal views expressed in the article represent a prevailing consensus.
Not surprising then that the data he cites in the article, while accurately quoted from the source (https://www.pcpsr.org/en/node/928), is hardly conclusive given the scope of the study. One general theme that is detectable throughout the study suggests that the more religious the sample of participants is, the less support they show for a two state solution. This applies to both Israelis and Palestinians, but is especially true for Israeli Arabs. So it is not surprising that a religious Jew would have a predictably particular opinion on the two state solution.
Mr. Eliashiv's views are indeed curious, but I can't help but quote Mark Twain in response to them: "I can understand perfectly how the report of my illness got about, I have even heard on good authority that I was dead... The report of my death was an exaggeration."