Yeah but it wasn’t the whole people of Israel clamoring. It was an elite ruling class. That’s what “the Jews” always refers to in John’s Gospel. The author of John’s Gospel may well have had close ties to that ruling elite (he tell us that the Apostle John was known to the High Priest).
So you are using this prooftext falsely.
I think many in our day have a God who is too small. I think, moreover, that the chastisement we have received as a people can be traced to this. We are not a great people as we were 200 years ago. This is because our God, in our time, is not (perceived as) great. He's perceived as a God who makes mistakes. He (in this view) made a mistake with the Jews, but is obligated to keep his promise in a literal, earthly sense. He is not permitted to be God. We put Him in our little boxes. We get caught up in these little end times scenarios predicated on the flawed dispensational theology of Darby, invented in the 1800s and embellished by the likes of Hal Lindsey and countless others. We lose sight of God's greatness, and are no longer intoxicated with His glory, with the wonder of providence.
We cannot fathom a God who is other than a big, warm, fuzzy Santa Claus-like entity. We cannot tolerate a God of righteousness, a God who both softens and hardens, a God who both saves and damns. We are unable to bear a notion of a God Whose glory displaces our interests, nor to accept that we exist for His pleasure, at His pleasure, and for His purposes.
That is why we have shriveled to a people of small stature, not great like our American forebears.