controversial "rant"? (Not site specific)

I've been seeing this everywhere and its so confusing for me...when some says that you need to ignore your doctor's advice. (not when someone suggests you look into it more, but when someone flat out says "ignore your doctor and do this")

first, their doctor knows the condition and how severe it is, you do not. you also don't know what medications.they can/cannot take (etc).

second, you can (at least in the state I live in) can be held accountable for anything that happens to that person should they take your advice and ignore their doctor....you can also be in trouble for giving out medical advice with no degree.

you're all obviously welcome to voice your own opinions if you'd like. I'm always open to hear the other side and why someone would tell another person to disregard a doctor's advice.