"Psyllium husks tear up your intestines" where did you get this from? I bought that stuff and very occasionally add a spoon or two to a meal but thought it was actually quite good for your health?
Fibre's a psyop man. Think about it. They literally turned flour waste into a health food product. Why would putting indigestible substances into your digestive system be a good idea? Before you say gut biome, I've got some probiotics to sell you.
I did try & find a credible source for the damage psyllium does but I can't find anything. Apparently psyllium is amazing. I guess I made it up.
Sarcasm is such a waste of everybody's time ...
Your argument works great on micro plastics: if it doesn't decompose in hundreds of years, basically being inert, why would it harm to have some mg of it in my body? For fiber though I think there is a case to be made that it increases the volume of what reaches your lower intestines and I think there is scientific evidence it lowers colesterol. Clearly it's not its chemical properties but its mechanical properties.