I think thats slightly unfair; people just tend to flag polarizing political topics because it often leads to inflamed repetitive arguments without the HN effect (which would be the Israeli lawyer chiming in, here).
I see barely any Israel discussions on this site, so if it is not symmetrical the main reason for that has to be that the submissions favoring one side or the other are very uneven, which is nobody's fault and not a problem. Especially since even being very generous, those discussions are not a good fit for this site. It's not like you don't have enough places to go if you really want to have one, it really does not have to be a heavily tech-focused site.
If you classify this as "critical of Israel (?)" then I can guarantee you pretty confidently that an article critical of the PA (or Hamas or whatever) would get flagged at a pretty similar rate here.
