These are not conclusions based on the other half, these are distinct facts. Also, if not for this, why would a chromium fork named “ungoogled chromium” exist?

It’s a fallacy. Why would I stop drinking alcohol, why would I stop smoking, why would I stop sunbathing without protection? Why would I leave the titanic? It is unsinkable. It works for you because you haven’t gotten to the bullet in the chamber yet.

The people here are trying to tell you that it’s not safe and that it will only get worse. And in opposition to your arguments, these facts are based on professional opinions and the known business practices of the companies these products are associated with.

I know you have your opinion but an opinion is not your personality. You can let go of it without ruining your life, again in opposition to keeping it and actually harming yourself, either financially or otherwise.

Why is it so hard to trust people who do this stuff for a living?

It ruins the internet. Google controls Chromium, if most browsers are Chromium-based, that means those browsers will eventually get whatever Google implements which means other browsers are forced to implement them or you can get broken websites.