Thank you, brother, much appreciated.

An average Israeli IQ of 100 would boost the Sephardic Jewish IQ to 97.5, assuming that the trope about Ashkenazi IQ being 115 is even remotely true. This is more in line with reality, but the core assumption is that Ashkenazi Jewish IQ is in fact that high. And the data tell us that it is not.

Therefore, the most likely set of outcomes is:
1) Pure Ashkenazi Jewish IQ is probably between 103 and 105;
2) Non-Ashkenazi average IQ is probably around 90-92;
3) Intermarriage between Sephardim, Mizrahim, and Ashkenazim over the past 70 years has resulted in a regression toward a mean IQ of about 100 overall across Israel;

This is the latest:
https://www.cbs.gov.il/he/publications/doclib/2021/2.shnatonpopulation/st02_09.pdf

There are less Ashkenazi Jews in Israel, since there is a mixture with Sephardic Jews.
Numbers look like 28.7% and not 29.7% (which does not make a whole lot of a difference.

Support for your claim can be found also here:
https://beyondhighbrow.com/2015/10/27/iq-in-israel-and-palestine/

https://ethnicgenome.wordpress.com/2009/03/01/israeli-iq-not-94-at-all/

The reason we have “lower” average IQ is because we mix with “less fortunate” Jews. Present company included (my ex-wife was a hot Sephardic with more than a standard deviation less than my IQ).

So
Fred can be right, and wrong – at the same time. It depends