I emailed as you suggested, and that's fine, but I thought I'd add a comment from the email since it seems relevant.
The phrasing of the guidelines led me to believe that the "significant new information" was intended as a secondary or clarifying guideline. Otherwise why not just list it as one of the on-topic criteria?
This clarification of the exception is relevant: "If they'd cover it on TV news, it's probably off-topic." If I watched TV news, I'd expect to see many of the posts we're discussing on it.
"New information" is an essentially tautological fig leaf that could justify the inclusion of anything that shows up in the eponymous news. If I need to, I can find numerous examples of flame wars incited by posts that violate all the guidelines except, possibly, this one about significant new information. Which seems to make this into a discussion about what is "significant". I think a community-trust enhancing action would be to eliminate this criterion.
Some examples of posts which violate all the guidelines except, perhaps, being new information and also, perhaps, significant. Although, arguably, if they are new and significant would be covered by TV news.
‘No Other Land’ consultant Awdah Hathaleen killed by Israeli settler (latimes.com)
https://news.ycombinator.com/item?id=44731958
How Israeli actions caused famine in Gaza, visualized
https://news.ycombinator.com/item?id=45447699
IDF officers ordered to fire at unarmed crowds near Gaza food distribution sites (haaretz.com)
https://news.ycombinator.com/item?id=44402896
Israel, Hamas reach ceasefire deal to end 15 months of war in Gaza (reuters.com)
https://news.ycombinator.com/item?id=42716440