What you’ve said does make sense & all the exaggeration and rubbish (not exclusive to this topic)on social media drives me nuts too but a few questions remain. For one while there are no squadron markings on PAF J-10’s (unlike all their other fighters) they appear to be using 2 distinct camo schemes. This would strongly suggest 2 squadrons? If so, 10 aircraft per squadron would not be enough?
Well, it is quite possible and likely that PAF will place future orders. But the initial order seems to be 20 aircrafts. If the initial order was more, then there should not have been such a big gap between deliveries.
About Camo scheme, I think not an issue if both camo schemes eventually are placed in a single squadron.