They dont have the same standards as rest of the world (or even the region and their peers) when it comes to inflation filtering (to get real GDP), esp for use of extrapolating (LDC quota +remittance driven) forex sector 1:1 to the Taka claim.
BD members here will write big sermons of nothingness or post you some repeated riffraff article that likewise cherrypicks superficial numbers rather than actually deeply analyses anything.
This is why you see a huge disparity between their PPP amount for their economy and anything that (starts) to account for the implied inflation like constant dollars (by looking at actual realised consumption volumes and prices on the ground).
Heck just look at energy consumption or any base input macro indicator. They are consuming at half, third etc kind of levels as rest of south asia and want to seriously say they have same real output per capita lol. Lo and behold you see the reality again when you go look at the labour productivity numbers at ILO too.
Why this is being done is simply to have a bigger denominator to suck up/launder more external loans to make up for low foreign investment, low-stagnant (and declining) market cap given forex reserves are also stagnant for them a long while now. This is easy route for corrupt govt (look at where they rank compared to region in CPI) that vote rigs to the extent of 95% seat winning (compare to PTI election win).
That said Pakistan must improve its external sector which is doing worse than BDesh's, it has been damaged and stagnated severely.
@ps3linux @Rusty (This answers your query earlier about the "growth" rate not really jiving with plain ground reality too)