I'm not really trying to audit you it was mostly a little joke since you seem self aware but for what it's worth I also have IBS.

I am sick a lot, but such is life. If I could make myself well by like harvesting a substance from the hearts of orphans I wouldn't do that, and I basically feel the same way about killing non human people. That said a couple of things: if crohns get it figured out, early intervention is important, if IBS fodmap exclusoom is not considered a long term solution by the folks at Monash that discovered it anyway but rather a diagnostic test.

I have slowly improved, with gradual introduction of trigger foods. Some stuff like sprouting lentils appears to help a bit. Cooking them in alkaline water (e.g. teaspoon of bicarb). Ferments help a lot! I assume the bacteria are eating the problematic sugars.

Isolates like tvp are also great! seitan and TVP are lifesavers for me during bad flares.

I won't lie, it's painful and gross and I have to wear pads 24/7 for mucus leakage at unexpected times but like if I was in the middle ages with bone cancer mine would be to suffer and die, I'm in this era with shitty food options and mine is to cramp and leak.

Other options poop transplant trials? They show promising results, I'm keeping an eye out.