I've given up on 'scientific' nutritional advice and now go with my intuition informed by my personal observations. What I have observed is that people who eat lots of carbs seem to get fat, people who eat lots of processed foods look terrible all around, people who are vegan tend to look like cancer patients, people who are vegetarian but also eat eggs and/or fish look reasonably healthy, and people who eat lots of roasted meat, vegetables and eggs seem to have the best outcomes.
I trust my observations of people I know more than the claims of celebrities. The vegans I've met have pallor skin, very low muscle mass, and look 10-15 years older than they really are. Vegan diets are very often deficient in various nutrients so their bodies start to cannibalize muscle mass and skin tissue, leading to weakness and premature aging. That's what my observations and intuition tells me.
If you don't want to eat cute animals that's fine, I think you can be reasonably healthy eating a mostly vegetarian diet with some eggs and small fish. But complete veganism is slow death, I won't go there.
Vegans look like cancer patients and are slowly dying, and vegan celebrities are lying. These are some bold takes.
A simple Google search will tell you vegans actually have a longer life expectancy (among other health benefits). Although it's not totally clear why this is.
So maybe the vegans who look like cancer patients to you are in fact old healthy vegans ;-)
Just walk into any significant veg(an) restaurant at a busy hour and look around you. You' might even find the opposite of what you are made to believe to be true.
But no matter what, I'm afraid you will convince yourself you don't have the obligation to adjust any corrupted views, but do the opposite because you can't handle the reality. And sadly you're far from alone.
And actually I get it. It's not easy to open your eyes and acknowledge your part in the (largely unnecessary) immense suffering we bring to billions of animals each year, and the destruction that comes with animal agriculture.
But please don't make it harder for the people who are trying to change things a bit, and stop spreading your made up stuff and ancient myths.
For me all this BS is the only actually difficult part of being a vegan.