I think the zeitgeist is starting to turn on the high-protein diet recommendations:
https://news.harvard.edu/gazette/story/2025/11/looking-to-bu...
There was a story about this in the NYT recently (can't find it) and IIRC, it basically said protein is out and fiber is in. It wasn't that simple, but that was my takeaway.
Honestly, you can find studies to prove just about anything when it comes to nutrition. Too much money involved. Sometimes you have to use common sense or try different diets to see how your body reacts. I find "high fiber" and "low protein" to be a suspicious suggestion though. Protein generally has a small insulin response, your body actually needs protein, and if things like the "protein leverage hypothesis" are correct it can also help with satiety. Fiber, on the other hand, is literally food stuff that can't be digested. It can be helpful for your colon bacteria, but that's about it.
Just because an article comes from Harvard doesn't mean it's correct -- Harvard scientists were also behind the original food pyramid, and were likely paid off by the sugar industry.
Fiber is stupidly easy to supplement, something that’s not talked about enough.
A glass of water with psylium husk a day and you solve a lot of modern diet problems.its also super cheap,a $20 bag can last you a year.