If the FDA has dumped those recommendations, that's bad news for MAHA because it's going in the wrong direction

Things that have mentioned the cap on saturated fat consumption being dropped were published way before Trump was voted in, so I don't think that has anything to do with the current administration.

I haven't seen anything that says that high fat AND high carbs are driving all chronic diseases, and that would, I feel, be a gross generalization, don't you think?

It's likely one of many hypotheses being put forward and on their own they are probably all gross generalisations. Researchers tend to focus on one thing and then they'll claim that one thing as the cause of something, when the reality is that there are many things coming together and interacting to cause things. We could do with a few more people to collect and assess all results across all studies to try and find patterns.

Apologies for a short response and thank you for all you've added, there's a lot for me to come back to here and I hope to return to it again when I have the time. Great to delve into things with you and I wish I had the time to dedicate to it more consistently.