This is not a cultural thing, it's a language thing. And it's not an opinion. You're just using English wrong. And like I said this is all about nuance. If you disagree with me it's your loss, because you'll keep using it wrong and keep wondering why people get pissed off.
"Fucking talk to the users" works because "fucking" is used to embellish "talk to the users". It's emphasizing how important the author feels it is to talk to the users.
"Fucking advice" doesn't work because "Fucking" does not embellish advice. You're not emphasizing any important point you're trying to make. You're just adding "Fucking" in front of "advice". it can at best be taken as a piece of advice on how to fuck. I don't think I need advice on how to fuck. I think I'm good enough.
Be humble when someone points out your error when you're not good at something. Also another rule of thumb is: good content will stand out if it's to stand out, regardless of click-fucking-baity headlines. Just write a fucking good content with a real substance and you're set to go.
You may want to read this to learn more about the difference: https://en.wiktionary.org/wiki/fucking#Adjective and https://en.wiktionary.org/wiki/fucking#Adverb