It's probably an unhealthy mix of incompetence or populist electioneering, with regards to the former I don't blame only PTI per se, all parties do this.
Anyone with adequate knowledge of statecraft, economics, and awareness of Pakistan's developmental needs would be wise enough to know that promising a nation of people, who are desperate for change and betterment that which you cannot deliver, is not a good idea. And ours news media are no better than monkeys, not a strategic thought comes through their minds, nor are they capable of any level of economic analysis, yet it's them informing opinions and supposedly holding politicians to account.
If they do the right thing and what's required, it will be deeply unpopular and running antithetical to what they promised and had been campaigning on for years. I hope they do it anyway.