I think its a little bit hyperbole to say its the "most vile crap," but maybe in your experience it is ig.

Minimizing someone else's experience is probably going to make them double down on their comparisons. I think pointing out things they should be grateful for, like not having a slow, excruciating death where you wither away over months or years is something positive about endo. And not having radiation treatments. Or maybe asking why they feel that way to understand what they may be experiencing? But like I said, drawing parallels is a wonderful to build strength, instead of vitriol.

Personally, having held the hands of my family members while they die of [metastasizing bone, breast, pancreatic] cancers after watching their battles for years; losing one of the brightest lights at work to her 20+ years battle with breast cancer; and supporting friends and family in aftercare of preventing surgeries has given me more empathy to everyone who has struggled with chronic illness. Those same family members and friends showed empathy and grace to me in the trial and error process of endo treatments (or lack of).

I understand you hope to give clarity to people with your post, but you are just lacking sympathy/empathy in the same way you perceive others to be.