I don't understand people freaking out over this - outside of a purely political reflex - hell hath no fury like taking away nerds' Mountain Dew and Flamin' Hot Cheetos.
Nor do I understand the negative reactions to new restrictions on SNAP - candy and sugary drinks are no longer eligible.
Maybe different areas of expertise aren’t equally valid, and even good experts often can’t see the forest for the trees in terms of developing actionable advice.
The only recommendations to limit fish that I have seen are due to mercury exposure risks:
https://www.fda.gov/food/consumers/advice-about-eating-fish
Coal burning and incidental industrial releases drastically increased the amount of mercury in surface waters over the past century. The released mercury gets transformed by bacteria into organomercury compounds which are lipophilic and concentrate up the food chain, meaning that predator fish like tuna and swordfish can contain orders of magnitude more mercury than the water they live in.
There are plenty of fish with much lower mercury levels (like salmon, trout, and sardines):
https://www.fda.gov/food/environmental-contaminants-food/mer...
You can eat all the salmon you want without worrying about mercury, and I haven't seen government advice to the contrary.
Thats tantamount to a recommendation that fish should comprise a minority of your protein, which is backwards. It’s almost certainly healthier overall for fish to be your primary protein source and to eat red meat, chicken, and pork sparingly. How many servings a week of fish do you think Japanese kids eat?