the issue is whats an acceptable level of 'worked on the bugs', but also tbh, whats the pressing need?
Remember, the F35 has one of the best, if not the best global support network of any fighter/aircraft. Also has a near endless budget and support from its govt and partners. Also brings decades of excellence from the OEM's into one really advanced package. Its racked up over 1 million flight hours yet is still plauged with issues. Yeah, china has probably also learnt from this to avoid this, but issues will occur, they will need to fly a ton of hours fleetwide to be able to get an idea of when, how and where these issues occur then correct them.
Maybe i could see a small squadron inducting 9-14 aircraft to support the development of the platform with end user feedback, but going all in on such a high risk platform, especially when a pressing need is not present is obscene. Also, remember, right now it will be unaffordable. F35 cost 250m in lot 1 per unit, now at 78m/unit at lot 14. This is with the continuous upgrades too, imagine Pak spending 3-4x the amount on 1 j-35 now vs in 5-8 years down the line saving significant sums, not only in procurement, but maintenance and support as issues are ironed out.
I seriously think all of these sudden chinese deals REEK of kickbacks and corruption, backed by sidhu's fragile ego, wanting to be the man who goes down in history for 'modernising the paf'- at any cost it seems. I genuinely could not think of a worse move than committing to a J35 buy so early, especially without any industrial benefits for Pak...