There is an ethical code of journalism, which you can read in the below link. Pakistani media needs to turn away from being a sensationalist circus to an ethical fabric of the society and having a tribunal for the media is the first step. As many journos have said multiple times, " if you havn't done anything wrong then you shouldn't fear accountability"
https://www.spj.org/ethicscode.asp
Regarding Dawnleaks, have you heard of Edward Snowden? How about Julian Assange? Do you know what happened to them and why?
Ethical codes are all good and dandy, as long as they are applied to someone else' as*. In a constitutional democracy basic freedoms are guaranteed. What we see instead is freedom to ban channels in cantonments, freedom to threaten cable operators to not show certain channels or change their positions. freedom to forcefully stop newspaper circulation in cantonments and elsewhere, freedom to burn newspapers, freedom to ban certain people on TV channels under severe threat to the life & liberty of journalists / anchors.
I know about Julian Assange & Edward Snowdon. Do you know about Umar Cheema (beaten up and thrown in a deserted area of Gujar Khan), Matiullah Jan (harassment on road in Islamabad), Ahmed Noorani (beaten up in broad daylight & later forced to abandon his twitter account), Taha Siddiqui (beaten up & pursued in Islamabad; now living outside Pakistan). Whether we agree with someone or not, freedom of speech is a fundamental right. It is available to ISPR which dares reject Government decisions (rejecting report on "Dawn Leaks" on twitter account), but it is not available to the people whose JD is to inform the public. Speaking truth to power is important and societies that encourage it are healthy and stable, unlike Banana Republics like Pakistan.
Anyone who tries to obfuscate issues using red herrings may impress security-centered fools, but someone with a sense of constitutionalism is not going to fall for false parallels.
If you read my entire post, you will see that I said we have 'lifafa' journalism in the west as well. It's just discrete but always is entirely aligned with the establishment. Even in the UK. All mainstream media which has the eyes and ears of 95% of the population is just extention of the establishent.
Show me one media outlet in Pakistan that goes against Pakistani State's narrative on Kashmir?
You are mistaking difference of opinion & dissent as treason. Speaking truth to power is a duty, not treason. As long as information is aligned with one's bias, one will be tempted to spread it even if it is fake news. I have seen great proliferation of fake news via WhatsApp. Shahid Masood's career is built on fake WhatsApp news. People living in cognitive bubbles are loathe to leave them. Whenever I see the term 'lifafa', I am 80% sure that the expression has been used due to cognitive dissonance.
Each nation-state has its official narrative about its core interests and its view of IR, especially in its neighborhood. Out of nationalist bias much of media would toe the line. But that does not mean that toeing Establishment line is something of value or has much good in it. Sometimes challenging a damaging narrative is important when its failure is manifest. This is just plain common sense. For example, what good has support for non-government actors done for Pakistan? Has it done anything at all? Have the long-term ramifications been worth the short-term gains, if any? I hope you see why it is important to challenge official narratives. Policy makers could be operating out of bias and have blind spots that they do not wish to address. When civilians rule, they know that they need to be re-elected; when Generals rule, they know that they can get away with misrule as long as they have a bogey. In Pakistan's hybrid system, some lies have the State's sanction and must not be questioned. Policies based on those lies are sacred and if journos address them, they are branded as anti-state, lifafa, Pressitutes, etc...
I am not saying that journos are all good. I know there are many who are actually black-mailers & crooks. But the excuse for dealing with them can not be used to support censorship.